Plica neuropathica in a 2-year-old boy.

Plica neuropathica is a rare acquired condition of sudden onset characterized by irreversible tangling of hair. It is sparsely reported in the literature, though it does not seem to be uncommon, at least in Hindu-religious persons of India. However, it has not been previously reported in patients as young as 2 years of age, and consequently this fact warranted reporting.