What Is an Ulcer?

An ulcer is an open sore that develops on the skin or on the mucous membrane lining the internal organs. Ulcers are usually caused by a break in the skin or mucous membrane, which allows bacteria to enter and multiply. Ulcers can be painful and may cause bleeding, pus, and other symptoms.

There are many different types of ulcers, including:

* Skin ulcers: These are open sores that develop on the skin. Skin ulcers can be caused by a variety of factors, including trauma, infection, and poor circulation.

* Peptic ulcers: These are ulcers that develop in the stomach or small intestine. Peptic ulcers are often caused by infection with the bacterium Helicobacter pylori, or by the use of certain medications, such as aspirin and ibuprofen.

* Leg ulcers: These are ulcers that develop on the legs. Leg ulcers are often caused by poor circulation, or by conditions that damage the skin, such as diabetes and varicose veins.

* Pressure ulcers: These are ulcers that develop on the skin due to prolonged pressure. Pressure ulcers are often seen in people who are bedridden or who have limited mobility.

Ulcers can be treated with a variety of medications, including antibiotics, pain relievers, and antacids. In some cases, surgery may be necessary to treat an ulcer.