What is skin ulcer? These people should be careful.

Skin ulcers may be caused by skin infection. Some bacterial diseases can cause skin ulcers. If you suffer from some psoriasis diseases, it can also cause skin ulcers. At the same time, dermatitis, frostbite and bedsores should be prevented.

1. Skin ulcers caused by bacterial diseases

1. The inflammatory masses of the three types of infections, namely skin furuncles, carbuncles and cellulitis, can become purulent and rupture, forming skin ulcers.

2. Hidradenitis is an infection that occurs in the apocrine sweat glands and is more common in women. After the inflammatory nodules rupture, pus will be discharged, forming skin ulcers, which will form scars after healing.

3. Lupus vulgaris is the most common type of cutaneous tuberculosis. It is more common in children and young people and is often found on the face. It initially appears as small nodules that are soft and apple-sauce colored. They may break down on their own to form skin ulcers, which may form atrophic scars after healing.

4. Painful skin tuberculosis often occurs in children and young people, and is more common in women. It is a tuberculosis lesion in the lymph nodes, bones, and joints under the skin, which spreads to the skin through the lymph nodes and causes the disease. Initially, the skin nodules are hard, and then they increase, adhere, and fuse into lumps, and then caseous necrosis, softening, and ulceration occur, forming skin ulcers.

2. Skin ulcers caused by physical skin diseases

1. Radiation dermatitis: Acute radiation dermatitis of grade III may cause skin ulceration.

2. Chilblains are congested purple-red edematous macules that cause skin ulcers when they break.

3. Bedsores are caused by long-term pressure on the body surface and are prone to occur on the back, cuboid, spinal cord, ischial tuberosity and heels, forming ischemic skin ulcers of varying sizes.