Benign cephalic histiocytosis

Benign cephalic histiocytosis (BCH) is a non-Langerhan's histiocytosis that is uncommon and self-limiting, usually beginning towards the end of the first year of life. Gianotti et al. originally described it in 1971. Initially affecting the head and neck, this condition is characterized by several small eruptions of yellow to reddish-brown papules that heal on their own. Histological investigations have demonstrated that this disorder is associated with dermal proliferation of histiocytes, characterized by intracytoplasmic comma-shaped bodies, covered vesicles, and desmosome-like structure.