Hair loss from trichotillomania
Trichotillomania is a type of hair loss due to voluntary pulling by the patient which often ends up breaking the hair shaft. In general, the patient twists the hair around a finger.
The gesture is occasional when going to sleep or concentrating on a task, but may become repetitive or obsessive.
It can lead to one or more areas of hair loss, usually in an irregular and bizarre shape. In these patches, the hair appears broken into different lengths, features a normal color and structure and does not detach easily. The most commonly affected areas are the frontoparietal regions of the side corresponding to the dominant cerebral hemisphere.
The condition mostly arises during infancy (men) and adolescence (women). At these ages the phenomenon is an expression of distress, a way to call for attention from the parent. While, if present in an adult, the psychological problem is more serious. Psychiatric disorders such as anxiety, depression, obsessive compulsive disorder and psychosis are to be considered.