Alopecia can be either scarring or non-scarring. Non-scarring alopecias tend to have preserved follicular ostia, with no clinically visible inflammation in most presentations, although histologic inflammation may be present. The common types of non-scarring alopecias are androgenic alopecia, telogen effluvium, alopecia areata, trichotillomania and traction alopecia. Scarring alopecias, also kno...

IMPORTANCE Alopecia areata is an idiopathic cause of hair loss with limited therapeutic repertoire. OBJECTIVE To compare the efficacy and safety of a high- vs low-potency topical corticosteroid in pediatric patients. DESIGN, SETTING, AND PARTICIPANTS This single-center, randomized, blind, 2-arm, parallel-group, superiority trial was carried out over a 24-week period at a tertiary referral a...

BACKGROUND Highly variable results of topical diphenylcyclopropenone (DPCP) in the treatment of alopecia areata have been reported so far. The purposes of the present study were to evaluate the efficacy and tolerability of DPCP treatment in severe alopecia areata. METHODS Twenty-eight patients (16 female and 12 male, 10-35 years old, mean age 25 years) with extensive alopecia areata were enro...

Androgenetic alopecia (AGA), or pattern hair loss, is a common disorder in Asian men and women, with a reported incidence of up to 73% among general population. There are several descriptions regarding the characteristics of AGA in patients of European descent. Asian patients with AGA have different types of hair loss and family histories from Europeans, which may affect treatment response. The...

Alopecia is one of the clinical manifestations of secondary syphilis. It is uncommon for hair loss to be the sole or predominant manifestation, as hair loss is the chief clinical and histologic differential diagnosis of alopecia areata. The main difference between these two entities is the detection of Treponema pallidum in syphilis. We present the case of a 24-year-old Hispanic man, human immu...

Trichotillomania is a psychodermatologic disorder characterized by uncontrollable urge to pull one's own hair. Differential diagnoses include the most common forms of alopecia such as alopecia areata. It is usually associated with depression and obsessive-compulsive disorder. Trichotillomania treatment standardization is a gap in the medical literature. Recent studies demonstrated the efficacy ...

Alopecia areata (AA) is the most common form of nonscarring alopecia involving the scalp and/or body. The most common pattern of hair loss is oval or round, but newer morphological variants are increasingly being described. We hereby report two cases of annular pattern of AA due to its unusual morphology.