- Cellulitis
Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm.
- Abscess
A skin abscess, or boil, is a swollen, painful, red and warm lump of skin that may rupture and drain pus.
- Epidermal (sebaceous) cyst
Epidermal (sebaceous) cysts are painless, moveable lumps that form beneath the skin's surface.
- Hematoma
A hematoma is a collection of blood in the tissue outside of a damaged blood vessel, usually after an injury.
- Trauma or injury
Trauma most often refers to serious bodily injury or wounds symptoms range depending on the injury.
- Polymyalgia rheumatica
Polycystic ovary syndrome causes absent or irregular periods, infertility, increased body hair, acne, and more.
- Poison ivy, oak, and sumac
The toxin found in poison ivy, oak, and sumac causes an itchy, allergic rash with raised welts and blisters.
- Bruise or contusion
Bruises, or contusions, cause skin discoloration, swelling and tenderness.
- Insect bites
Redness, swelling, pain, itching, bumps are common symptoms of insect bites.
- Insect sting
An insect sting may be followed by redness, swelling, and itching.
- Giant cell arteritis (temporal arteritis)
Giant cell arteritis is a blood vessel condition causing headaches located near temples and flu like symptoms.
- Osteomyelitis (bone infection)
Osteomyelitis is an infection of a bone that causes pain, swelling, and redness.
- Chemical burns
A chemical burn can cause symptoms ranging from burning and blisters to pain and shortness of breath.
- Burn (heat or fire)
Burns caused by heat are called thermal burns and can cause pain swelling, skin changes, blisters and more.
- Benign lipoma
Lipomas are a harmless collection of fatty cells that form a round or oval, rubbery lump under the skin.
