Cutaneous mastocytosis exacerbated by pinworms in a young boy

Area of Science:

• Pediatric Dermatology
• Allergy and Immunology
• Microbiology

Background:

• Cutaneous mastocytosis (CM) in children typically follows an indolent course with spontaneous regression.
• Mast cell degranulation can be triggered by various factors, leading to clinical symptoms.
• Understanding these triggers is crucial for managing CM in pediatric patients and their families.

Observation:

• A pediatric patient with urticaria pigmentosa experienced exacerbation of symptoms.
• The exacerbation was linked to mast cell degranulation.
• Enterobius vermicularis (pinworm) infection was identified as the causative agent.

Findings:

• This case report details a novel trigger for mast cell degranulation in cutaneous mastocytosis.
• Enterobius vermicularis infection has not been previously recognized as a factor exacerbating urticaria pigmentosa.
• The findings highlight a potential link between parasitic infections and CM exacerbation.

Implications:

• Identifying Enterobius vermicularis as a trigger expands the known factors causing mast cell degranulation in CM.
• This knowledge can guide diagnostic approaches and management strategies for pediatric CM patients presenting with unexplained exacerbations.
• Further research may explore the mechanisms by which parasitic infections influence mast cell activity in CM.