Health Tip: Have Hives?

(HealthDay News) - Hives are red, raised patches of skin that are usually very itchy. Hives themselves often are not serious, but they may indicate a more serious condition.

The U.S. National Library of Medicine lists these common triggers for hives:

• Some medications.

• Foods that many people are allergic to, including shellfish, nuts, eggs and milk.

• Pollen.

• Dander from animals, notably cats.

• Bites from insects.

• Infections and some illnesses, including lupus and leukemia.

• Stress or anxiety.

• Prolonged exposure to the sun or the cold.

• Excessive sweating.