Causes of Angiodema

Angioedema is a type of swelling and very similar to hives. It commonly occurs near the eyes and lips. It is not dangerous and does not leaving any lasting scars, even without treatment.

Symptoms

• Swelling, welts, and blisters around swollen areas are common symptoms of angioedema. There may also be some pain or warmth around the affected area or troubled breathing. It usually appears around the lips and eyes, but can also occur on the hands, genitalia, feet or inside of the throat.

Hereditary Angioedema

• Hereditary angioedema is uncommon, but is much more serious. Symptoms often occur faster and can cause swelling of the digestive tract, abdominal cramping and swelling of the airways.

Causes

• Angioedema is caused by inflammation in the skin. An allergic reaction to certain medicines or foods can trigger it; particularly in those that are already allergic to shellfish, nuts, eggs, and milk. Medicines like penicillin, aspirin and ibuprofen are also major culprits of angioedema. Other common allergens, like pollen, insect bites and pet dander, may also cause it.

Physical Factors

• Environmental factors can also cause angioedema. Conditions like extreme heat, cold, sunlight, and water can influence the release of histamines, which cause a reaction in certain people.

Dermatographia

• Dermatographia means "write on the skin." Mayo Clinic experts say when the skin is scratched or pressure is applied, raised lines or bumps may appear because of histamine-based anigioedema leading to swelling beneath the skin.

Treatment

• To treat angioedema, doctors may prescribe either over-the-counter medications or prescription drugs. In severe cases, a shot of adrenaline may be needed. If it happens often, you may need to carry epinephrine (adrenaline) at all times in case of an emergency.