Symptoms typically include a burning pain followed by small blisters or sores. The mouth may be affected by recurrent sores (aphthous ulcers). Indications of this can include fever, skin rashes, sores, and joint pain and swelling. This causes blisters that slough off and turn into sores. Magnesium hydroxide is useful against canker sores (aphthous ulcer) when used topically. Hydrocolloid dressings are used for pressure ulcers (also known as bed sores). It is also used as a mouthwash for canker sores and toothaches. Complications can include muscle atrophy, pressure sores, infections, and breathing problems. Minocycline may cause upset stomach, diarrhea, dizziness, unsteadiness, drowsiness, mouth sores, headache, and vomiting. Other symptoms include fatigue, gray hair, mouth sores, poor growth, and swollen tongue. Other symptoms included fatigue, headaches, coughs, and unusual skin sores. If reactivated, it presents as herpes labialis, also known as cold sores. Severe disease may rarely be complicated by skin sores or gangrene. Problems such as pressure sores and chest infections are all increased by immobility. It helps relieve the pain and discomfort and speeds healing of sores.