AQUAGENIC PRURITUS

By Gary M. White, MD


Aquagenic pruritus (AP) is the sensation of intense itching upon exposure to water.

Bathing Pruritus

Bathing pruritus is a subset of AP and is defined by pruritus with contact from the bath water. Various factors may cause BP including the water temperature, physical characteristic/ionic content and the Ph of the water, the soap used in bathing, sponging and toweling afterwards. As noted above, bathing pruritus is common in patients with atopic dermatitis.

Treatment

If the skin is dry, routine moisturising may help. See dry skin hand out.

Oral antihistamines may be tried. Reduction of the PCV (e.g., phlebotomy) can improve the symptoms. Other reported treatments have included naltrexone, NB-UVB, montelukast, and propranolol.

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