Guide Note

Hives are red bumps on your skin that are usually itchy. Hives can be caused by allergic reactions or in some cases by stress or infections. Someone with allergies is more likely to get hives. Hives are common and usually go away by themselves.

Mild symptoms of hives usually need no treatment. You can take antihistamines like Benadryl which blocks the release of histamine, the cause of hives. For severe attacks of hives you may need to go to the emergency room and get an injection of adrenaline.

Fast Facts

1. Also known as Urticaria
2. An allergic skin reaction
3. Comes on suddenly
4. Produced by histamine
5. Slightly raised, smooth, flat-topped bumps called wheals
6. 1 in 5 people experience them in lifetime
7. May last a few minutes to several hours, in some cases days
8. Itching may be mild or severe
9. Types: Acute, chronic and physical, dermatographism
10. Can be caused by insect bites
11. Can be caused by exposure to sunlight

1. Apply cool compresses
2. Sleep and work in a cool room
3. Wear loose fitting clothing
4. Take cool showers
5. Minimize vigorous activity
6. Take antihistamines

Hives form when a chemical called histamine is released by specialized cells known as mast cells. It is true that allergic reactions ultimately lead to the release of histamine, but other circumstances can result in the release of histamine, causing an outbreak of hives. Histamine acts by causing blood vessels to leak fluid into the nearby tissues. In the skin, small areas of swelling develop as a result of capillary (the smallest blood vessels) leakage. — MedicineNet

Disclaimer

The content in this page is not a substitute for professional medical advice. If you think you have Hives, please consult your doctor.