The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform
Leonard C. Sperling - One of the best experts on this subject based on the ideXlab platform.
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An Atlas of Hair Pathology with Clinical Correlations
2012Co-Authors: Leonard C. Sperling, Shawn E. Cowper, Eleanor A. KnoppAbstract:Normal Hair Anatomy and Architecture Specimen Acquisition, Handling, and Processing Evaluating and Describing Transverse (Horizontal) Sections Classification of Hair Disease Distinctive or Critical Histological Features and Associated Diseases Clinical Correlation Senescent Balding ('Senile Alopecia') Androgenetic Alopecia Telogen Effluvium Trichotillomania Traction Alopecia Postoperative (Pressure-Induced) Alopecia Temporal Triangular Alopecia Alopecia Areata Syphilitic Alopecia Non-Scarring Alopecia from Systemic Lupus Erythematosus Loose Anagen Hair Syndrome Central, Centrifugal, Scarring Alopecia Lichen Planopilaris Frontal Fibrosing Alopecia Chronic Cutaneous Lupus Erythematosus (Discoid Lupus Erythematosus) Brocq's Alopecia (Pseudopelade of Brocq) and 'Burnt out' Scarring Alopecia Acne Keloidalis (Folliculitis Keloidalis) Dissecting Cellulitis of the Scalp (Perifolliculitis Capitis Abscedens et Suffodiens) Tufted Folliculitis Tinea Capitis Aplasia Cutis Congenita of the Scalp Overview of Hair Shaft Disorders Index
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Temporal Triangular Alopecia acquired in adulthood.
Journal of the American Academy of Dermatology, 1999Co-Authors: Carol A Trakimas, Leonard C. SperlingAbstract:Temporal Triangular Alopecia is a relatively common, nonscarring form of Alopecia. Sometimes congenital, the vast majority of lesions appear during the first 6 years of life and remain stable thereafter. We report a case of temporal Triangular Alopecia arising during adulthood.
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Evaluation of hair loss
Current Problems in Dermatology, 1996Co-Authors: Leonard C. SperlingAbstract:Most physicians and many dermatologists find the evaluation of hair loss to be a difficult and confusing subject. The history is particularly important and should cover the questions of shedding versus thinning, duration, family history, and grooming practices. The most important feature of the physical examination is the pattern of hair loss, which can be diffuse (affecting the entire scalp) or patterned (confined to one or several portions of the scalp). Evidence of hair-shaft fragility should also be assessed. Examination of the scalp surface is best performed with magnification, and evidence of scarring Alopecia (e.g., loss of follicular ostia) should be sought. Special investigative techniques include the gentle hair pull, the forcible hair pluck (trichogram), timed shed-hair counts, the hair-growth window, and scalp biopsy. The normal 4 mm scalp biopsy specimen should contain ∼40 follicles, and ∼30 of these should be terminal anagen hairs. Telogen counts >25% and a preponderance of vellus and indeterminate hairs are clearly abnormal. There is no “standard” battery of laboratory tests that must be ordered when evaluating hair loss. Choice of tests is largely guided by the history and physical findings. There are numerous ways to classify Alopecia, but none is ideal. Mechanisms resulting in Alopecia include congenitally insufficient number of follicles; telogen effluvium; hair-follicle destruction (scarring Alopecia); hair miniaturization; hair-shaft defects; and anagen effluvium. Androgenetic Alopecia is characterized by a family history of balding and typical male-patterned or female-patterned hair loss. Compared with that from a “normal” occipital scalp, a biopsy specimen from an affected area will show evidence of follicular miniaturization and an elevated telogen count. In contrast, patients with senescent Alopecia have no family history of balding, and the size of follicles and percentage of telogen hairs are normal in all parts of the scalp. Alopecia areata is a nonscarring form of Alopecia that can be seen clinically with a variety of patterns. In early lesions, terminal anagen hairs show peribulbar inflammation, and there may be numerous catagen/telogen hairs. In long-standing lesions, most of the follicles miniaturize and are found in the catagen/telogen phase, and anagen hairs show dystrophic shaft formation. Telogen effluvium is a diffuse form of Alopecia that typically begins 3 to 4 months after a precipitating event, such as child-birth or major surgery. Follicular numbers are normal, but all parts of the scalp show an increased percentage of telogen hairs. Patients with trichotillomania , often adolescent girls, have bizarre or irregularly shaped zones of partial hair loss. A hair-growth window will show a progressive increase in hair density. Incomplete or distorted follicular anatomy is diagnostic, but increased catagen/telogen hairs, trichomalacia, and pigment casts are additional clues to the histologic diagnosis. Traction Alopecia is a related form of mechanical Alopecia, often caused by traumatic methods of hair styling. Pressure-induced Alopecia , yet another form of mechanical Alopecia, can cause temporary or permanent hair loss at the site of prolonged intraoperative pressure. Syphilitic Alopecia can be found with or without other cutaneous stigmata of syphilis. Hair loss may be diffuse and noninflammatory, resembling telogen effluvium, or patchy or diffuse and inflammatory, resembling Alopecia areata. Temporal Triangular Alopecia is characterized by a small, permanent patch of miniaturized (vellus) hairs found in newborns or young children. Children with the loose anagen hair syndrome have a subtle and irregular thinning of the hair. Anagen hairs can be easily and painlessly extracted, revealing an absence of root sheaths. The subject of scarring Alopecia is controversial. Four distinctive forms (clinically or histologically or both) of primary scarring Alopecia are discussed. Lichen planopilaris is characterized by interface lichenoid dermatitis of the upper follicle and is more easily diagnosed when lesions of lichen planus are found outside of the scalp, especially in conjunction with spiny follicular papules. In contrast, chronic cutaneous lupus erythematosus shows vacuolar interface alteration and granular deposits of immunoglobulin G (IgG) at the dermal/epithelial junction. Finding lesions of discoid lupus erythematosus outside the scalp assists in diagnosis. The follicular degeneration syndrome is a distinctive form of scarring Alopecia that symmetrically and centrifugally involves the crown or vertex. The condition predominantly affects black adults. Premature desquamation of the inner root sheath serves as a histologic marker of the disease, although a variety of other histologic changes are typically seen. In contrast, patients with the pseudopelade of Brocq pattern of Alopecia are usually whites with asymmetric, irregularly distributed patches of hair loss. Recently some authors proposed that the condition shows characteristic histologic features.
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Clinical and histologic findings in temporal Triangular Alopecia
Journal of the American Academy of Dermatology, 1994Co-Authors: Carol A Trakimas, Leonard C. Sperling, H G Skelton, K J Smith, J L BukerAbstract:Background: Temporal Triangular Alopecia (TTA; also called "congenital Triangular Alopecia") is a common disorder that is assumed to be congenital. Little is known about its histologic features. Objective: Our purpose was to describe four new cases, review the literature, and present histologic features based on vertical and transverse sectioning. Methods: The history, clinical features, and histologic findings of four patients with TTA are described and the relevant literature reviewed. Results: Lesions of TTA are seldom congenital, and most are best described as lancet-shaped. The "bald spot" contains normal numbers of hairs, although virtually all are vellus or indeterminate follicles. Conclusion: Most cases of TTA appear to develop during the first few years of life, and the designation "congenital" is a misnomer. The appearance of Alopecia can be best explained as a focal zone of hair miniaturization leading to vellus hair formation.
Carol A Trakimas - One of the best experts on this subject based on the ideXlab platform.
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Temporal Triangular Alopecia acquired in adulthood.
Journal of the American Academy of Dermatology, 1999Co-Authors: Carol A Trakimas, Leonard C. SperlingAbstract:Temporal Triangular Alopecia is a relatively common, nonscarring form of Alopecia. Sometimes congenital, the vast majority of lesions appear during the first 6 years of life and remain stable thereafter. We report a case of temporal Triangular Alopecia arising during adulthood.
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Clinical and histologic findings in temporal Triangular Alopecia
Journal of the American Academy of Dermatology, 1994Co-Authors: Carol A Trakimas, Leonard C. Sperling, H G Skelton, K J Smith, J L BukerAbstract:Background: Temporal Triangular Alopecia (TTA; also called "congenital Triangular Alopecia") is a common disorder that is assumed to be congenital. Little is known about its histologic features. Objective: Our purpose was to describe four new cases, review the literature, and present histologic features based on vertical and transverse sectioning. Methods: The history, clinical features, and histologic findings of four patients with TTA are described and the relevant literature reviewed. Results: Lesions of TTA are seldom congenital, and most are best described as lancet-shaped. The "bald spot" contains normal numbers of hairs, although virtually all are vellus or indeterminate follicles. Conclusion: Most cases of TTA appear to develop during the first few years of life, and the designation "congenital" is a misnomer. The appearance of Alopecia can be best explained as a focal zone of hair miniaturization leading to vellus hair formation.
Mohammed A. Alsufyani - One of the best experts on this subject based on the ideXlab platform.
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Bilateral Temporal Triangular Alopecia Associated with Phakomatosis Pigmentovascularis Type IV Successfully Treated with Follicular Unit Transplantation.
Case reports in dermatological medicine, 2011Co-Authors: Robin Unger, Mohammed A. AlsufyaniAbstract:Temporal Triangular Alopecia (TTA), also known as congenital Triangular Alopecia, is a nonscarring, noninflammatroy, circumscribed form of Alopecia. TTA has been associated with several disorders, such as Phakomatosis Pigmentovascularis. Hair restoration surgery using follicular unit transplantation has been a successful treatment modality for TTA. Herein we report such a success that was sustained for over six years.
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Bilateral Temporal Triangular Alopecia Associated with Phakomatosis Pigmentovascularis Type IV Successfully Treated with Follicular Unit Transplantation
2011Co-Authors: Robin Unger, Mohammed A. AlsufyaniAbstract:Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Temporal Triangular Alopecia (TTA), also known as congenital Triangular Alopecia, is a nonscarring, noninflammatroy, circum-scribed form of Alopecia. TTA has been associated with several disorders, such as Phakomatosis Pigmentovascularis. Hair resto-ration surgery using follicular unit transplantation has been a successful treatment modality for TTA. Herein we report such a success that was sustained for over six years. 1
Robin Unger - One of the best experts on this subject based on the ideXlab platform.
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Bilateral Temporal Triangular Alopecia Associated with Phakomatosis Pigmentovascularis Type IV Successfully Treated with Follicular Unit Transplantation.
Case reports in dermatological medicine, 2011Co-Authors: Robin Unger, Mohammed A. AlsufyaniAbstract:Temporal Triangular Alopecia (TTA), also known as congenital Triangular Alopecia, is a nonscarring, noninflammatroy, circumscribed form of Alopecia. TTA has been associated with several disorders, such as Phakomatosis Pigmentovascularis. Hair restoration surgery using follicular unit transplantation has been a successful treatment modality for TTA. Herein we report such a success that was sustained for over six years.
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Bilateral Temporal Triangular Alopecia Associated with Phakomatosis Pigmentovascularis Type IV Successfully Treated with Follicular Unit Transplantation
2011Co-Authors: Robin Unger, Mohammed A. AlsufyaniAbstract:Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Temporal Triangular Alopecia (TTA), also known as congenital Triangular Alopecia, is a nonscarring, noninflammatroy, circum-scribed form of Alopecia. TTA has been associated with several disorders, such as Phakomatosis Pigmentovascularis. Hair resto-ration surgery using follicular unit transplantation has been a successful treatment modality for TTA. Herein we report such a success that was sustained for over six years. 1
Hyojin Kim - One of the best experts on this subject based on the ideXlab platform.
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An Unusual Case of Congenital Triangular Alopecia on Frontal Area Successfully Treated by Surgery.
International journal of trichology, 2020Co-Authors: Jung Eun Seol, Woo Jung Jin, Ji Young Yun, Hyojin KimAbstract:Congenital Triangular Alopecia (CTA) is a form of circumscribed, noncicatricial, and noninflammatory hair loss. It manifests as a Triangular or oval-shaped alopecic patch on the frontotemporal region of the scalp and rarely involves the temporoparietal or occipital area. That is why it is also called temporal Triangular Alopecia. However, there has been just one case reported in the middle frontal area. Here, we report a successfully treated case of CTA in a 17-year-old boy who was born with a 2.5 cm × 3.5 cm alopecic patch in the middle frontal area.
