- Cellulitis
Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm.
- Muscle strain
Muscle strain occurs when muscles are stressed, overworked, or injured due to physical activity or labor.
- Abscess
A skin abscess, or boil, is a swollen, painful, red and warm lump of skin that may rupture and drain pus.
- Nipple stimulation
Nipple stimulation can cause red, irritated, hard or erect, and sensitive nipples, and even discharge.
- Hematoma
A hematoma is a collection of blood in the tissue outside of a damaged blood vessel, usually after an injury.
- Nipple irritation
Nipple irritation may cause nipple pain, redness, skin dryness and cracking, and bleeding around the nipple.
- Bruise or contusion
Bruises, or contusions, cause skin discoloration, swelling and tenderness.
- Mastitis (infectious)
Mastitis, an infection of the breast, causes pain or swelling of the breast, fever, and flu-like symptoms.
- 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.
- Poison ivy, oak, and sumac
The toxin found in poison ivy, oak, and sumac causes an itchy, allergic rash with raised welts and blisters.
- 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.
- Epidermal (sebaceous) cyst
Epidermal (sebaceous) cysts are painless, moveable lumps that form beneath the skin's surface.
