Telogen effluvium hair bulb

Do telogen effluvium hairs have a white bulb

  1. ology would be a telogen hair obtained from a person who is experiencing a telogen effluvium. Hairs that are shed in androgenetic alopecia are telogen hairs
  2. Telogen effluvium is the most common cause of diffuse non-scarring alopecia. It is characterized by an abrupt onset of diffuse hair loss usually seen 2-3 months after a triggering event. It is usually self-limiting lasting for 6 months whereas in chronic telogen effluvium it persists beyond 6 months. No specific treatment exists for telogen.
  3. What is telogen effluvium? Hair grows in two stages. During the anagen phase, hair is actively growing. This goes on for two to four years, then it enters the telogen, or resting, phase. Several months after this, the hair naturally sheds. Usually, about 85% of hair is in the anagen phase and about 15% is in the telogen phase
  4. Telogen Effluvium. Telogen effluvium is a type of hair loss that literally means outflow of telogen hairs.. The most common signs are an increase in the number of hairs shed with a white bulb and noticeable thinning on the scalp. TE isn't a condition in the same way as AGA and AA
  5. The loss of hair containing a bulb is a completely natural occurrence. In fact, such hairs can be shed anywhere from 50 to 100 times per day. However, a problem occurs when more hair than that is shed. Whether through AGA, telogen effluvium, or alopecia areata, an increase in hair loss with a white bulb attached can be treated
  6. I suffered chronic telogen effluvium for 4 years. Last year I recovered from. From then my hair fall is normal. But now my hair is shedding with black bulb at the end. Whenever I run the fingers I could see 20 hairs falling. Are those hairs related to mpb?
  7. Telogen effluvium (TE) is considered the second most common form of hair loss diagnosed by dermatologists. It occurs when there's a change in the number of hair follicles that are growing hair.

The bulb may be small or large, and be white or pigmented. A hair without a bulb means the hair was lost prior to the root. Excessive loss of hair with a white bulb attached is indicative of Telogen effluvium. This is male or female pattern baldness. If a hair falls out with a white bulb attached, it cycled through the Telogen phase The white bulb at the end of the hair, along with the loosely attached collection of friable debris gives the shed hair its characteristic appearance. In the scalp of the healthy, young human adult, approximately 90% of the hair will be in the anagen (growth) phase and approximately 10% will be in the telogen (dormancy) phase Telogen hair is also known as a club hair due to the shape of the root. It should be distinguished from anagen effluvium, in which the hair shedding is due to interruption of active or anagen hair growth by drugs, toxins or inflammation (eg, alopecia areata ). Anagen hair has a pointed or tapered tip. Telogen effluvium. Telogen effluvium regrowth Telogen Effluvium: The shed hairs are typically telogen hairs, which can be recognized by a small bulb of keratin on the root end. Whether the keratinized lump is pigmen... Whether the keratinized lump is pigmen.. Telogen is the resting phase of hair, when a hair that is done growing remains at rest in the follicle before it is pushed out by a new hair. In telogen effluvium, a majority of hair remains in this phase longer than the usual 3 months and are not properly followed by the growth phase. I feel that D3 helps your hair cycles transition between.

The hair fibers fall out quickly, but instead of looking like typical telogen hairs with little bulbs of keratin on the root end, the hairs that fall out are mostly dystrophic anagen hairs with a. Telogen effluvium. Hair-pull test with microscopic evaluation. White bulb on shaft. Tinea capitis, environmental/external factor, systemic disease. Same as above. Mid-shaft, fractured hairs In Telogen Effluvium, chronic hair loss generally starts 2 to 4 months after the event that triggers it occurs and lasts for around 6 months. Once the hair falls off, new hair starts growing quickly. However, substantial re-growth is only observed after many months of the onset of Telogen Effluvium How long do i need to recover from telogen effluvium ? for me the trigger was viral fever its been 5 months and 24 days , i still am loosing my hairs with white bulb at the end when does the shedding stop completely? Does the white bulb at the end of the hair give an indication of te? 1 doctor answer • 4 doctors weighed in. Connect with a.

Telogen - The telogen phase is a rest period for hair cells. Underneath the surface of the skin (scalp), a new anagen hair is developing and will soon push the telogen hair, with the white bulb, from the follicle Telogen effluvium is a form of temporary hair loss that usually happens several months after a person experiences a traumatic event or stress. The hair usually regrows within 6 to 9 months. In. Telogen Effluvium happens approximately 2-6 months after an event that causes active hair growth to stop. The telogen hair has a bulb at the end known as club hair. During a physical exam, the provider will be able to do a Hair Pull Test to see if this condition is affecting you. Common causes include

Telogen Effluvium: A Revie

  1. Telogen effluvium is a condition characterized by temporary hair loss due to shedding of resting or telogen hair after a shock to the system. New hair continues to grow. Telogen hair has a bulb or club-shaped tip. It should be distinguished from anagen effluvium, where the hair sheds due to interruption of active or anagen hair growth by drugs.
  2. Telogen Effluvium Clinical Presentation (). Telogen is the 3rd phase of the hair cycle.It typically lasts 3-5 months on the scalp. During this phase, the hair is described as a club hair (hair with bulb of keratin at the root- white bulb root) ().Approximately 10% of the hairs are cycling in this phase
  3. Anagen effluvium is a diffuse hair loss like telogen effluvium, but it develops much more quickly and can cause individuals to lose all their hair. Anagen effluvium is most frequently seen in people taking cytostatic drugs for cancer or those who have ingested toxic products like rat poison
  4. Telogen effluvium hair loss usually occurs fast. This is why it feels so traumatic to people who go through it. This type of sudden hair loss may have you finding clumps of hair in the shower drain or in your hair brush. Remember: only a doctor can diagnose you with telogen effluvium
  5. How Does Hair That Is Shedding Due To Telogen Effluvium Look?: Typically, there are modifications in hair texture earlier than the shedding truly begins. That is as a result of the effected hair strikes into the resting stage and these strands are not deeply embedded within the scalp or being correctly nourished
  6. Twelve weeks of MePL supplementation significantly reduced the hair density in the telogen phase and, in parallel, improved scalp dryness and hair condition. These effects could be linked to MePL activity on cell proliferation in hair bulb. MePL is an original association of plant extract that could

How Do I Know If I Have Telogen Effluvium or Androgenetic

  1. Increased hair shedding in telogen effluvium occurs due to a disturbance of the normal hair cycle. Common triggers of telogen effluvium include childbirth, severe trauma or illness, a stressful or major life event, marked weight loss and extreme dieting, a severe skin problem affecting the scalp, a new medication or withdrawal of a.
  2. Telogen effluvium hair loss is a phenomenon that occurs after pregnancy, major surgery, drastic weight loss, or extreme stress, in which you shed large amounts of hair every day, usually when shampooing, styling, or brushing. It can also be a side effect of certain medications, such as antidepressants, beta-blockers, and non-steroidal anti-inflammatory drugs
  3. Telogen effluvium, a separate entity, occurs when anagen hairs are prematurely shifted into the telogen phase and is triggered by medications, physical or psychological stressors, hospitalization, and pregnancy, among other causes. Kenogen is the lag phase between loss of telogen hair and the growth of new hair
  4. The cause of Telogen Effluvium hair loss has nothing to do with DHT and everything to do with energy metabolism. Managing this, cortisol levels, and addressi..
  5. Why does my hair comes out with the white bulb thingy.Each time I scratch my scalp I can feel these white bulb and when I scratch them out with my nails it comes out with the hair growing in with it.Most of the hair that are attached to these white bulbs are baby hair
  6. The diagnosis of telogen effluvium was made. The mother was counseled regarding the natural history of the problem, physical signs to monitor and reasons to return. Discussion Hair is an epidermal appendage. It has a regular cycle of phases where hair grows (anagen), rests (telogen) and has a transition phase (catagen) in between
  7. iturization. So the white bulb at the end of your hair shouldn't be a contributor to your hair loss. That bulb is supposed to be there

Telogen hair bulbs may remain anchored in the hair follicle until the onset of the next anagen phase at the end of telogen or be shed prematurely. The release of a telogen hair is called exogen. While some degree of telogen hair shedding is normal, excessive loss of telogen hairs will manifest as increased hair shedding or diffuse loss of hair. There was a resulting effluvium of a mixture of tapering telogen hairs and fractured hairs. As entry into telogen is an integral part of the process, cytotoxic hair loss may be regarded as a variant of the conventional 'telogen effluvium' and we propose the term 'atrophic telogen effluvium' Telogen Effluvium. Telogen Effluvium results in an increased number of hairs entering the telogen, or resting phase. The additional shedding of telogen hair usually occurs 3-4 months after triggers or various stresses, however, even if you notice an increased shedding of telogen hair, it does not necessarily imply TE is present, and so the. The hair loss that's seen following COVID-19 is identical to telogen effluvium (TE). Just like the participants in the study, people with Telogen Effluvium have noticeable hair loss around 2 to 3 months after a stressful event. Hair typically falls out in large clumps, often while brushing or showering

Telogen or resting phase, when the hair shaft detaches, and hair shedding takes place to make room for new growth. With telogen effluvium, an abnormally large amount of the hair is in the telogen phase. Under normal circumstances and absent unusual stress, 5 to 10 percent of a person's hair is in the telogen phase at any one time While the loss of hair with a white bulb attached can be a normal occurrence, you may have reason to worry if the loss of such hair is excessive. This can be an indicator of telogen effluvium or pattern baldness and, without treatment, can worsen. In this post, I'll break down the structure of the hair strand, as well as the hair growth cycle Telogen effluvium appears as a light thinning of your hair, usually on top of the scalp. The shed hairs can be recognized as telogen hairs if they still have a small bulb of keratin on the root end. There are many reasons that might cause you to develop telogen effluvium. You might be experiencing metabolic stress or changes in your hormone. What is Telogen Effluvium? Effluvium means outflow and it refers to hair loss. Telogen refers to the last stage in the hair growth cycle. Telogen Effluvium is the premature loss of hair that is in the last stage of the growth cycle.. This is how it works. Scalp hair grows in 4 different stages or phases Anagen effluvium is considered long-term hair loss but it is still reversible. The first symptoms of anagen effluvium are usually experienced within 2 to 6 weeks of taking the drug for the first time. In many cases, hair loss is excessive and in clumps. Telogen effluvium. Hair loss takes place during the telogen (resting) phase


White Bulb on Hair Follicle - What Does It Mean? - Hairverv

All mature hair follicles undergo four major life cycles: anagen, catagen, telogen, and exogen. Anagen phase is best defined as the growth stage. During this point, cells are rapidly dividing in order to regenerate the composition of the lower cyclic portion of the follicle, or the bulb New hair continues to grow. Telogen hair has a bulb or club-shaped tip. Telogen effluvium should be distinguished from anagen effluvium, in which the hair shedding is due to interruption of active or anagen hair growth by drugs, toxins or inflammation (e.g. alopecia areata) I need to disclose right up front that I am not a doctor. I am a woman who has had telogen effluvium (TE) or Chronic TE off and on during several times of my life. I have spent thousands of hours on hair loss research, spent tons of time and money on many products, and have consulted with many doctors. I consider myself a bit of a women's hair loss expert simply because of my own experiences. The tests: There are no tests for telogen effluvium, but your doctor may ask you about recent life events and look for small club- shaped bulbs on the fallen hair's roots. The bulbs mean the. Twelve weeks of MePL supplementation significantly reduced the hair density in the telogen phase and, in parallel, improved scalp dryness and hair condition. These effects could be linked to MePL activity on cell proliferation in hair bulb. MePL is an original association of plant extract that could help to prevent and/or limit hair loss in women

The hair follicle has a loose grip on their hair shaft. Before hair falling, the hair enters the telogen phase in place for two to four monthsThe base of the hair follicle forms the hair bulb. The bulb living cell can grow and divide to build the hair shaft. Telogen effluvium can activate for several different reasons The telogen hair is shed during the exogen phase, which may not coincide with the new anagen phase. Assuming 100,000 scalp hairs with 10% in telogen, the average hair loss equals 100 per day. The next anagen cycle begins with enlargement of the dermal papilla at bulge level and formation of a new anagen bulb. Human hair follicle anatom If you have telogen effluvium, the hair follicles do not die. Normally about ten percent of the hair follicles are in the telogen (resting) stage of the hair cycle. The telogen stage lasts about three months. With TE, these resting hairs fall out suddenly, and the telogen stage of the hair cycle is prolonged way in excess of three months The hair root ends deep in the dermis at the hair bulb, and includes a layer of mitotically active basal cells called the hair matrix. While being under stress can't turn your hair gray, stress can trigger a common condition called telogen effluvium, which causes hair to shed about three times faster than normal. The hair grows back, so. Normal telogen hairs -depigmented club shaped bulb, no sheath Hair often appears to be of normal thickness (perceptibly thin hair more common with preexisting pattern alopecia) Shorter regrowing hairs in frontal and bitemporal area

White Bulb on Hair Follicle - A Sign of Hair Loss? - Hairguar

The shed hairs are typically telogen hairs, which can be recognized by a small bulb of keratin on the root end. Whether the keratinized lump is pigmented or unpigmented makes no difference; the hair fibers are still typical telogen hairs. Anagen effluvium is a diffuse hair loss like telogen effluvium, but it develops much more quickly and. Telogen effluvium is a temporary hair loss condition that can affect women. It is the second most common type of hair loss diagnosed. Telogen effluvium looks very similar to female pattern hair loss in that they both have diffused hair thinning throughout the scalp area. Although the hair starts falling out, the hair follicles remain intact and. Anagen Effluvium is a non-scarring type of hair loss that occurs secondary to an acute injury to the hair follicles by an endogenous or exogenous cause. The diffuse hair shedding occurs during the anagen phase of the hair cycle, secondary to chemotherapy medications or radiation. This damage to the hair bulb and matrix leads to a cessation of. Abstract. Telogen effluvium (TE) is one of the most common causes of diffuse nonscarring hair loss. In its acute form, it generates a lot of anxiety in the patient, which can be significantly allayed with a confident diagnosis. In its more chronic form, however, the hair loss may go unnoticed for long periods of time The white bulb at the end of the hair, along with the loosely attached collection of friable debris gives the shed hair its characteristic appearance.In the scalp of the healthy, young human adult, approximately 90% of the hair will be in the anagen (growth) phase and approximately 10% will be in the telogen (dormancy) phase

With that said, you can see it's abnormal to lose hair during the anagen phase. In AE, damage to the hair matrix and/or hair bulb severely impacts hair shaft production, which leads to hair shaft breakage or complete loss of the shaft. Damage to the follicle associated with anagen effluvium is most often caused by a toxic agent or inflammation As described above, the tapered hair shafts look like exclamation points and are therefore called exclamation hairs. Punch biopsy of the scalp will typically show a normal anagen/telogen ratio of around 90% anagen/10% telogen hair follicles. A biopsy with greater than 15% of the hair follicles in telogen phase, is indicative of telogen effluvium Chronic Telogen Effluvium. Chronic telogen effluvium (CTE) refers to a diffuse hair loss all over the scalp and persists for more than 8 months. Patients present with hair loss with increased shedding and thinning of abrupt onset and fluctuating course. There is diffuse thinning over the entire scalp, frequently accompanied by bitemporal recession Telogen effluvium is a scalp disorder characterized by the thinning or shedding of hair resulting from the early entry of hair in the telogen phase (the resting phase of the hair follicle). Emotional or physiological stress may result in an alteration of the normal hair cycle and cause the disorder, with potential etiologies including eating disorders, fever, childbirth, chronic illness, major.

Hairs falling with black bulb, are those hairs related to mpb

Telogen Effluvium. Figure 3 Mild female pattern hair loss (FPHL) with early widening of the part on the crown (A), compared with the occipital scalp (B). Severe female pattern hair loss with thinning hair over the entire crown, vertex, and posterior vertex (C) with relative sparing of only the lower occipital scalp (D) A dermatologist diagnosed me with Telogen Effluvium around 2015 - which is diffuse hair loss usually resulting from stress, which generally fixes itself after a few months. Though it can be chronic, as mine appears to be. It's also the common diagnosis for women suffering hair loss Re: Telogen Effluvium w/hair with white blub? Lol, you said blub. That word makes me laugh, I don't know why. Anyway, all hairs have a white bulb at the end, it's just that the bulb gets smaller and smaller with Androgenetic Alopecia as each hair gets thinner (miniaturization). I don't know about Alopecia Areata, Alopecia Universalis, or AT though Telogen effluvium is a surprisingly common hair loss condition that causes your hair to excessively shed, usually on the top of your scalp. It can be very distressing to see your hair falling out, but worry not, as this condition is temporary and Dr Ravi Ratnavel , a leading consultant dermatologist, explains what triggers it and when you can. Telogen Effluvium: A Type of Alopecia Telogen Effluvium is a common type of hair loss or alopecia, but it has hundreds of causes. In our first post in this series, we discussed the hair cycle. As a recap, all hairs on the body generally go through three stages: Anagen, catagen, and telogen. Anagen is the active growing stage. Catagen is the transition stage

Telogen Effluvium: Causes, Regrowth, and Mor

If a patient's hair loss is from a resolving telogen effluvium, there should be a significant improvement in hair density over 6 to 9 months. For most with resolving TE, the hair density should be completely back to normal at that time. If this is actually androgenetic alopecia a worsening of hair density will likely occur over a 12 month period A hair that has a white bulb at the end of it is called a Club Hair. The white bulb is made of keratin (protein) and this bulb is responsible for rooting the hair in the follicle until it sheds and the hair growth cycle re-starts. In this way, the white bulb - is an indication that your hair is in the Telogen phase of growth. Ok so what's the. Drugs cause two types of hair loss: Analgen effluvium and Telogen effluvium. In this, the matrix cells in the hair bulb show high dividing activity and produce a hair shaft from which a new hair grows later. This period lasts for like 3-5 years. Note that the duration of this phase determines the length of a person's hair. 2. Catage The hair growth cycle has three major phases: anagen, catagen and telogen-and then the cycle goes back to anagen and renews. To begin with, let's define a few terms: the hair follicle is what anchors the hair to your skin. A hair follicle consists of a papilla and a bulb. The papilla provides blood to the cells, and the bulb is the cells.

Chronic Telogen Effluvium (CTE) What is Chronic Telogen Effluvium - CTE? CTE is often confused with female pattern hair loss and most commonly occurs in women in their 30s. The onset is usually sudden and there is an abrupt increase in the amount of hairs shed in a day up to 100 hairs, and these shed hairs usually have a white bulb Managing this, cortisol levels, and addressing the original trigger is key to halting and reversing Telogen Effluvium or diffuse hair loss. In this video we go over 5 proven tips that you should be utilizing to reverse Telogen Effluvium and keep your hair from shedding any further while you address the original trigger. 1 Telogen effluvium Hair-pull test with microscopic White bulb on shaft evaluation Tinea capitis, environmental/external Same as above Mid-shaft, fractured hairs

White Bulb at End of Hair - Is it due to Hair Loss? 2021

The structure of hair follicles is simple and straightforward, but its functions and its growth cycle are quite complex. Any significant alteration to the normal growth cycle of a hair follicle may lead to a hair condition like alopecia areata   or telogen effluvium The Telogen Phase ( The resting phase ) The telogen phase is the last stage of the hair cycle. Usually up to 10-15% of hair can be in the telogen phase at any one time. During this phase the hair remains in the follicle and is released as new hair begins in the growth phase. For hair on the scalp, this phase can take as long as 3 months When you brush your hair, you will notice tiny white bulbs at the base of the strands of hair. This is an important clue that the hair was lost directly from the scalp and was not due to hair breakage. What causes telogen effluvium? This condition is oftentimes precipitated by some circumstance, emotional or physical. For example, major surgery. Telogen phase. This resting phase of hair growth lasts about 3 months and normally accounts for about 9% of your hair. During the telogen phase the hair follicle is completely inactive and hair is considered dead. Telogen hair has a visible white bulb on the end of the shaft and falls out briskly as new hair begins to grow How To Distinguish Androgenetic Alopecia and Chronic Telogen Effluvium. This is a good study to reference: Distinguishing Androgenetic Alopecia from Chronic Telogen Effluvium When Associated in the Same Patient [].While you can do this test in your sink, I would recommend getting a hair catcher to gauge your progress moving forward.. When evaluating if a treatment is efficacious or not.

itchy scalp and shedding more with white bulbs

Telogen effluvium can be triggered anywhere from 2-3 months before the exogen phase where the hair is actually shed and usually tapers off after 6-9 months. Telogen effluvium is normal and temporary. Usually your hair will return to normal growth and shed cycle once the stressful event has been resolved or the imbalance corrected While the loss of hair with a white bulb attached can be a normal occurrence, you may have reason to worry if the loss of such hair is excessive. This can be an indicator of telogen effluvium or pattern baldness and, without treatment, can worsen. In this post, I'll break down the structure of the hair strand, as well as the hair growth cycle The bulb of hair consists of fibrous connective tissue, glassy membrane, external root sheath, internal root sheath composed of epithelium stratum (Henle's layer), and granular stratum (Huxley's layer), cuticle, cortex, and medulla. If you suffer from Telogen effluvium or hair shedding and are you looking for the right treatment to stop.

Telogen effluvium DermNet N

Hair shedding (telogen or anagen effluvium) Hair is in a constant cycle of growth, rest and renewal. It is natural to lose some hair each day. Some conditions that cause abnormal hair shedding include pregnancy, severe illness, certain medication and chemotherapy.Chemotherapy is a course of drugs taken by people with cancer as part of treatment. With anagen effluvium, there is no club hair (fully mature keratinized hair) that signifies TE because the hair itself is still undeveloped. The main difference, however, is the rapid onset of anagen effluvium . AE causes a rapid rate of hair loss, typically within a number of days or weeks after an environmental impact shocks the follicles Bottom Line - Telogen Effluvium vs Male Pattern Baldness (MPB) TE is a non-scarring alopecia that is described by excessive shedding of telogen club hair diffusely from the scalp. Depending on the length of time, or whether this increased shedding persists, it is referred to as acute or chronic The hair bulb is built by the dermal papilla (which includes a group of specialized fibroblasts, blood capillaries, and nerve endings) and the hair matrix (consisting of rapidly proliferating keratinocytes). However, this percentage of telogen hair can be overestimated, with novel data indicating that only 3.6% remain in the telogen phase. A trichogram (the plucking of 40-60 hairs and posterior microscopic analysis of the hair bulbs to discern how many of them are in anagen or telogen phase, considered consistent with telogen effluvium if more than 25% are in telogen phase) was performed, showing 35% of telogen follicles. 2

Hair grows in cycles of various phases: anagen is the growth phase; catagen is the involuting or regressing phase; and telogen, the resting or quiescent phase (names derived using the Greek prefixes ana-, kata-, and telos- meaning up, down, and end respectively).Each phase has several morphologically and histologically distinguishable sub-phases. Prior to the start of cycling is a phase of. There are three types of hair loss which can all be associated with high stress levels: Telogen effluvium (TEL-o-jun uh-FLOO-vee-um), where a significant stress pushes large numbers of hair follicles into a resting phase. Within a few months, affected hairs might fall out suddenly when simply combing or washing hair

Telogen Effluvium. The name is fancy -- telogen effluvium -- but all it means is increased hair shedding. Sometimes a person's immune system attacks the cells of the growing hair bulb. This. telogen effluvium ____ ___ precipitating factors precede shedding 1-6 months. telogen effluvium. what are common precipitating factors of telogen effluvium? if you have a positive hair pull test and the hair has white bulbs, what might this indicate? telogen effluvium. what are patient exclusions for self care?-<12-no family histor

So you will notice that your hair might start falling out 2-4 months after you recovered from COVID-19 or 2-4 months after the emotional stress. Telogen effluvium rarely lasts longer than six months, although some cases last longer. Although losing a great number of hairs within a short time can be frightening, the condition is usually temporary Telogen Effluvium typically occurs during the latter years of life and, as the name suggests, happens when hair follicles enter into the telogen (resting) phase prematurely. This disrupts the natural hair growth cycle, causing visible signs of thinning, shedding, or balding Has anyone ever experienced telogen effluvium (temporary hairloss)? Now it is barely visibal. I remember years back when I had to do a drug test for a job, and they pulled hair from my head, it hurt a lot and the bulb was huge. My bald spots went from rough with two totally smoothe ones near the nape of the neck. Maybe my hair is dying. Effluvium means the active shedding of hair, which may lead to alopecia, the visible result of hair loss. Telogen effluvium, for example, may result in androgenetic alopecia but may also come to a.

Telogen Effluvium and Excessive Hair Shedding

If a drug or toxin is removed hair may return within 3 months of the withdrawal. It is significant as it may involve over 85% of the total hair. Telogen effluvium has a club hair (bulb at the end). It occurs a few months after an event that stops active hair growth e.g., stress, surgery, fever, post-partum Anagen Effluvium Clinical Presentation (1, 2). Anagen effluvium (AE) is an acute often reversible non-scarring hair loss condition.It is typically referred to as chemotherapy-induced alopecia. AE occurs when there is a sudden insult to hair follicles during the active growth phase Hair cycle. The hair growth cycle, whether terminal or vellus, is divided into three stages: active growth (anagen), involution (catagen), a period of rest (telogen) and, as an extension of this last stage, two additional stages: hair shaft-extrusion (exogen) and empty hair follicle (kenogen) (Fig. 22.31)

Inflammatory Diseases of Hair Follicles, Sweat Glands, andfront