Galvanic urticaria

Galvanic Urticaria is a rare form of physical urticaria where hives (urticaria) form on the skin due to exposure to an electrical field. This condition is also known as electrical urticaria.

Symptoms

The primary symptom of Galvanic Urticaria is the formation of hives on the skin. These hives are typically red, itchy, and may be surrounded by a red flare. They can vary in size and may join together to form larger areas known as plaques. The hives can appear anywhere on the body, but are most common on the arms, legs, and trunk.

Other symptoms may include a burning sensation, tingling, or stinging in the affected area. In severe cases, systemic symptoms such as headache, nausea, vomiting, difficulty breathing, and anaphylaxis can occur.

Causes

Galvanic Urticaria is caused by exposure to an electrical field. This can occur from direct contact with electrical devices, or from being in an environment with a high electrical field. The exact mechanism of how this causes hives to form is not fully understood, but it is thought to involve the release of histamine from mast cells in the skin.

Diagnosis

Diagnosis of Galvanic Urticaria is based on the patient's history and physical examination. The doctor may also perform a test where the skin is exposed to an electrical field to see if hives form. This is known as a challenge test.

Treatment

Treatment for Galvanic Urticaria involves avoiding exposure to electrical fields as much as possible. This may involve changes to the patient's environment or lifestyle. Antihistamines may also be used to help control symptoms. In severe cases, other medications such as corticosteroids or immunosuppressants may be used.

See Also

• Urticaria
• Physical Urticaria
• Dermatology

References

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