Abstract Urticaria pigmentosa is the most common form of cutaneous mastocytosis, in children and can be present in adult as well. It is generally considered a benign, self-resolving condition that often remits in adolescence. It can be diagnosed clinically, based on the appearance of numerous small yellow- brown macules and papules that urticate when rubbed and are symmetrically distributed , mostly on the trunk and the extremities. Skin biopsy is helpful in establishing the diagnosis. Treatment options generally include antihistamines and/ or topical corticosteroids. In this case report , we present the case of a of a 5 month old male child with history of multiple brownish patches over scalp, trunk, bilateral upper and lower limb which started when he was 2 months old. He was diagnosed with Urticaria pigmentosa based on clinical and histopathologic findings.
Asotra et al. (2025) studied this question.