Cellulitis is a serious deep infection of the skin caused by bacteria. It usually occurs in an area that has already had an injury or skin break.
Cold sores are small blisters around the mouth, caused by the herpes simplex virus. They are sometimes called fever blisters. The most common strain of the virus causing cold sores is herpes simplex virus 1. It can be spread by kissing or sharing eating utensils or even sharing towels.
Contact dermatitis is a reaction that happens after your skin comes in contact with certain substances. Skin irritants cause most contact dermatitis reactions. Other cases are caused by allergens, which trigger an allergic response.
Creeping eruption is a skin infection caused by hookworms. The infection is also called cutaneous larva migrans or sandworm disease. Creeping eruption causes severe itching, blisters, and a red growing, winding rash. The rash can grow up to 1 to 2 centimeters per day.