Complex & Invisible Health / Chronic Urticaria
Chronic Urticaria
Urticaria means hives: itchy, raised welts on the skin. When hives, deep swelling (angioedema), or both keep returning for more than six weeks, it's called chronic urticaria.
About chronic urticaria
There are two main types. In chronic spontaneous urticaria, hives appear without a consistent external trigger. In chronic inducible urticaria, hives are set off by a specific physical trigger such as scratching, pressure, cold, heat, sunlight or exercise. Some people have both.
Common symptoms and challenges
- Itchy welts that move around and usually fade within a day
- Swelling of the lips, eyelids, hands or feet
- Disrupted sleep and daily life from persistent itch
- Frustration when allergy tests don't find a cause
Biological factors
Well established: Mast cells in the skin release histamine and other mediators that cause hives and swelling. In a subset of people with chronic spontaneous urticaria, autoantibodies activate mast cells, and the condition is associated with autoimmune thyroid disease.
Important distinction: Chronic spontaneous urticaria is rarely caused by a food allergy, which is why routine allergy testing often doesn't help.
Laboratory testing
Diagnosis is based on history and examination. Guidelines suggest only limited routine blood tests, such as a blood count and inflammatory markers, with further tests guided by your history. Challenge tests may be used for inducible types.
Important limitations: No genetic or at-home test can diagnose chronic urticaria or identify its cause.
Related Tests
No confirmed test available yet
We don't currently offer a laboratory test with a meaningful, scientifically supported connection to this topic, so we don't list one here. We'd rather show nothing than suggest a connection the science doesn't support.
For education only. This information is not medical advice and doesn't replace evaluation by a qualified healthcare professional. Swelling of the tongue or throat, or difficulty breathing, needs emergency care. Health & laboratory disclaimer