6 doctors weighed in:

What does it mean for urticaria to be idiopathic?

6 doctors weighed in
Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Unknown

Chronic urticaria (hives) is divided into 2 groups - non-physical & physical.
In the latter mast cells release histamine under external stimuli - heat, pressure, cold. 50% of non-physical chronic urticaria is autoimmune, the immune system attacking self. About 5% can be attributed to a chronic infection or malignancy. When your allergist has ruled out these the rest is idiopathic & usually benign.

In brief: Unknown

Chronic urticaria (hives) is divided into 2 groups - non-physical & physical.
In the latter mast cells release histamine under external stimuli - heat, pressure, cold. 50% of non-physical chronic urticaria is autoimmune, the immune system attacking self. About 5% can be attributed to a chronic infection or malignancy. When your allergist has ruled out these the rest is idiopathic & usually benign.
Dr. Steven Machtinger
Dr. Steven Machtinger
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Dr. Sean McGhee
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: No cause identified

Idiopathic means that no specific reason for having the hives (urticaria) was found.
Most hives that go on longer than a month or so have no cause found and so are idiopathic.

In brief: No cause identified

Idiopathic means that no specific reason for having the hives (urticaria) was found.
Most hives that go on longer than a month or so have no cause found and so are idiopathic.
Dr. Sean McGhee
Dr. Sean McGhee
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