Galvanic urticaria
Galvanic Urticaria
Galvanic Urticaria (pronunciation: gal-van-ic ur-ti-ca-ri-a) is a rare form of physical urticaria where hives or wheals develop on the skin due to exposure to electrical currents or metallic conduction.
Etymology
The term 'Galvanic' is derived from the Italian scientist Luigi Galvani who discovered the principle of galvanism. 'Urticaria' comes from the Latin word 'urtica', meaning 'nettle', a plant known to cause skin irritation and hives.
Symptoms
The primary symptom of Galvanic Urticaria is the development of hives or wheals on the skin. These are typically red, itchy, and may be surrounded by a red flare. They can vary in size and may appear anywhere on the body. Other symptoms may include a burning sensation, tingling, or stinging in the affected area. In severe cases, systemic symptoms such as difficulty breathing, low blood pressure, and loss of consciousness may occur, known as anaphylaxis.
Causes
Galvanic Urticaria is caused by exposure to electrical currents or metallic conduction. This can occur through direct skin contact with metals or exposure to electrical devices. The exact mechanism of how this causes hives is not fully understood, but it is thought to involve the release of histamine and other inflammatory substances from mast cells in the skin.
Diagnosis
Diagnosis of Galvanic Urticaria is based on the patient's history and physical examination. A detailed history of exposure to potential triggers is important. Skin testing, also known as patch testing, may be used to confirm the diagnosis.
Treatment
Treatment for Galvanic Urticaria primarily involves avoiding exposure to the triggering factors. Antihistamines may be used to help control symptoms. In severe cases, systemic corticosteroids or immunosuppressive drugs may be required.
Related Terms
External links
- Medical encyclopedia article on Galvanic urticaria
- Wikipedia's article - Galvanic urticaria
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