- Erysipelas: A superficial infection of the skin and subcutaneous tissue caused by group A streptococcus. It typically presents as a bright red, raised, and painful area of skin. - Folliculitis: An infection of the hair follicles. It typically presents as small, red bumps on the skin. - Impetigo: A contagious skin infection caused by bacteria. It typically presents as small, fluid-filled blisters on the skin. - Lymphangitis: An inflammation of the lymph vessels. It typically presents as red streaks on the skin. - Necrotizing fasciitis: A serious bacterial infection that can rapidly destroy the skin and underlying tissue. It typically presents as a rapidly spreading area of pain, swelling, and discoloration. - Panniculitis: An inflammation of the subcutaneous fat. It typically presents as a painful, swollen area of skin. - Vasculitis: An inflammation of the blood vessels. It can present with a variety of symptoms, including skin rashes, joint pain, and fatigue.