ABSTRACT
Table 11.1 lists hair loss in children according to the age of onset. Hair loss in children can be circumscribed or diffuse, transitory or permanent (Table 11.2).
Table 11.1 Hair loss in childhood: age of onset
The angle followed by scalp hairs when they emerge from the scalp forms spiraling or non-spiraling patterns emanating from central whorls. The central point of the whorl is characterized by the divergent growth of hairs. Clockwise hair patterns are usually very evident in children and may be multiple. A single parietal scalp whorl is seen in 95% of infants. Seven per cent of children show a particular hair stream on the forehead: the cowlick (Figure 11.3).
