Hair loss and Trauma.

Hair loss and Trauma.
Tight hair bands or cornrows can cause thinning simply by breaking off the hairs at their base. Some chemical hair treatments damage the follicles or the hair itself. Insects that attack the hair (like lice or scabies) can cause hair loss either by directly breaking the hair or by causing the person to scratch, which in turn damages the hair. Trichotillomania is a psychological condition in which people compulsively pull out or twirl their hair around a finger, sometimes