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Published on: September 20, 2018
A 6-month old with total body flushing and a macular-papular lesion
Heather Conrad1, Marianne Gausche-Hill, David Burbulys
1Department of Emergency Medicine, Harbor-UCLA Medical Center, Torrance, CA 90509, USA.
Insights
A rare cause of infant skin flushing is solitary mastocytoma, a skin lesion releasing mast cell mediators. Early diagnosis and counseling are key for managing this condition in children.
Area of Science:
- Pediatric Dermatology
- Allergy and Immunology
Background:
- Infant skin flushing can indicate various conditions, including allergic reactions, sepsis, or vasodilation.
- Rarely, flushing results from mast cell mediator release (histamine, prostaglandins, tryptase).
Observation:
- A 6-month-old infant presented with severe, generalized skin flushing.
- A distinct yellow-tan, raised lesion on the thigh was noted, suggestive of a solitary mastocytoma.
- Erythema surrounding the lesion indicated a positive Darier sign.
Findings:
- The case highlights solitary mastocytoma as a rare cause of severe flushing in infants.
- Diagnosis was confirmed by dermatology, with no further treatment required for the infant.
- Management counseling was provided to the family for symptom recurrence.
Implications:
- This case underscores the importance of considering mastocytosis in the differential diagnosis of infant flushing.
- Understanding mast cell mediator release is crucial for accurate diagnosis and management.
- Prompt identification and appropriate counseling can alleviate parental concerns and guide future care.
Abstract:
Flushing of the skin of an infant may be a sign of the child's first allergic reaction to food, insect envenomation, or other allergens, a sign of sepsis, or due to dilation of cutaneous vessels caused by a vasodilator substance or neural mechanisms. A rare cause of this condition results in the release of mast cell mediators such as histamine, prostaglandin D2, tryptase, chymase, and leukotrienes. We present a case of a 6-month-old with severe total body flushing and a yellow-tan, raised, well-demarcated lesion on the thigh consistent with a solitary mastocytoma. Erythema was most pronounced adjacent to the lesion, suggesting a positive Darier sign. Subsequent evaluation by a dermatologist confirmed the diagnosis, and the patient underwent no further therapy; however, the family was appropriately counseled on management if the symptoms were to reappear. Appropriate diagnosis and management of this patient and other forms of mastocytosis in children are discussed.
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