oa Current Allergy & Clinical Immunology - Physical urticaria presenting as cholinergic urticaria with dermatographism : allergies in the workplace

Volume 21 Number 4
  • ISSN : 1609-3607



About half of the cases of chronic urticaria in the general population are due to physical urticaria. The different types of physical urticaria are: acquired cold urticaria, delayed-pressure urticaria, solar urticaria, vibratory urticaria, urticarial dermatographism and cholinergic urticaria. Physical urticarias are not known to be related to specific occupations, but can present or be aggravated in any occupational setting. This holds true especially for cholinergic urticaria and delayed-pressure urticaria which are the commoner types found in occupational settings requiring heavy work.

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