urticaria cold urticaria https://rarediseases.info.nih.gov/diseases/6131/cold-urticaria Cold urticaria is a condition that affects the skin. Signs and symptoms generally include reddish, itchy welts (hives) and/or swelling when skin is exposed to the cold (i.e. cold weather or swimming in cold water). This rash is usually apparent within 2-5 minutes after exposure and can last for 1-2 hours. The exact cause of cold urticaria is poorly understood in most cases. Rarely, it may be associated with an underlying blood condition or infectious disease. Treatment generally consists of patient education, avoiding exposures that may trigger a reaction, and/or medications. cold contact urticaria MONDO:0022799 SCTID:74774004 urticaria idiopathic cold icd11.foundation:915116593 EFO:1001881 MEDGEN:472942 UMLS:C0221207 primary idiopathic cold urticaria