Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm.
Redness, swelling, pain, itching, bumps are common symptoms of insect bites.
An insect sting may be followed by redness, swelling, and itching.
A skin abscess, or boil, is a swollen, painful, red and warm lump of skin that may rupture and drain pus.
The toxin found in poison ivy, oak, and sumac causes an itchy, allergic rash with raised welts and blisters.
Osteomyelitis is an infection of a bone that causes pain, swelling, and redness.
A chemical burn can cause symptoms ranging from burning and blisters to pain and shortness of breath.
Burns caused by heat are called thermal burns and can cause pain swelling, skin changes, blisters and more.