physical urticaria


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physical urticaria

Urticaria due to the direct effects of physical forces on the skin. Cold temperature (cold urticaria), pressure (pressure urticaria), ultraviolet radiation (solar urticaria), and scratching (dermographism) are some causes of physical urticaria.
See also: urticaria
References in periodicals archive ?
This patient was not dermatographic on scratch testing, but the pattern of exacerbation following intercourse or wearing pants was highly suggestive of a physical urticaria.
Physical urticaria generally occurs as a result of a physical stimulus and the most common form is dermographism.
The duration of CU varies considerably and nearly 20% of patients remain symptomatic 20 years after onset, especially, physical urticaria tend to persist the longest, often for many years.
Following patients were excluded: patients on oral corticosteroids for past 1 month patients on oral anti-histamines for past 72 hours pregnant and lactating women patients with urticarial vasculitis patients with a history of type I hypersensitivity patients with physical urticaria other than simple dermographism.
Cold urticaria is a type of physical urticaria where exposure to cold leads to the formation of wheals.

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