Hair Loss in Children

Hair shaft abnormalities in alopecia areata evaluated by optical coherence tomography

“…In cases where the trichogramm fails to provide a diagnosis, examination of a biopsy specimen is necessary to differentiate AA from other forms of hair loss. OCT would be a helpful non‐invasive technique to further differentiate AA from other types of alopecia like in trichotillomia (1, 22). Because of the different patterns, age of onset and duration in AA, the objective evaluation of therapeutic effects is difficult.…”

“…A lopecia areata (AA) is an autoimmune, reversible, initially patchy hair loss most commonly involving the scalp, although other regions of the body may be affected (1). At any given time, approximately 0.2 per cent of the population has AA and approximately 1.7 per cent of the population experiences an episode of AA during their lifetime (2).…”