# Idiopathic cutaneous Mastocytosis mimicking infantile psoriasis in a six-month-old male: a rare presentation

## TL;DR

A six-month-old baby in Guatemala had a rare skin condition mistaken for psoriasis, highlighting diagnostic challenges in resource-limited areas.

## Contribution

Presents a rare case of idiopathic cutaneous mastocytosis mimicking psoriasis in a rural setting.

## Key findings

- Idiopathic cutaneous mastocytosis can resemble infantile psoriasis clinically.
- Diagnostic delays are common in resource-limited regions due to lack of specialists and tests.

## Abstract

Cutaneous mastocytosis is an uncommon condition, representing a subset of mast cell disorders primarily affecting the skin. It can manifest in various forms, including urticaria pigmentosa, mastocytomas, or diffuse cutaneous involvement. While generally benign in infants, it can mimic other dermatological conditions, such as eczema or psoriasis, leading to misdiagnosis. In resource-limited environments, diagnostic delays are further compounded by restricted access to dermatological specialists and laboratory investigations. This case underscores the clinical and socioeconomic complexities of diagnosing and managing idiopathic cutaneous mastocytosis (ICM) in a rural Guatemalan infant.