The fall areata is a hair disorder that is characterized by the fall of hair in specific points of the head, that is, partial clapas with rounded aspect or more extensive areas. The fall areata can be due to important episodes, traumatic or of great stress like: illnesses, conflictive situations, traumas or hormonal changes.
Androgenetic decline is due to genetic factors. It is due to an increase in the action of male hormones or androgens on certain areas of the scalp genetically predisposed to the condition. It causes a progressive decrease in the activity of the hair follicle that decreases in size until atrophy of the hair bulb occurs with the consequent hair loss.