Flushing due to solitary cutaneous mastocytoma can be prevented by hydrocolloid dressings.

Solitary mastocytomas occur commonly and can occasionally be associated with troublesome flushing related to rubbing. We report a child with a solitary mastocytoma who repeatedly and reproducibly caused flushing only with rubbing and scratching. Conventional treatment with antihistamines was not completely effective and caused sedation. A trial application of double-layer hydrocolloid dressing led to complete abolition of flushing episodes until the child reached an age where he could peel off the dressings. This treatment is particularly suited to very young children with solitary mastocytomas whose parents do not feel comfortable with antihistamine treatment, topical or intralesional corticosteroids, or surgical interventions. This treatment may be used alone or in conjunction with conventional therapy where there has been a failure to achieve complete control of flushing and/or blistering.