- Bruise or contusion
Bruises, or contusions, cause skin discoloration, swelling and tenderness.
- Bursitis (anserine)
Anserine bursitis is a swelling of the bursa at the inside of the knee and causes pain, redness and stiffness.
- Hematoma
A hematoma is a collection of blood in the tissue outside of a damaged blood vessel, usually after an injury.
- Abscess
A skin abscess, or boil, is a swollen, painful, red and warm lump of skin that may rupture and drain pus.
- Trauma or injury
Trauma most often refers to serious bodily injury or wounds symptoms range depending on the injury.
- Bruised shin
A bruised shin results in a bluish appearance on the skin, but the skin does not break.
- Cellulitis
Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm.
- Phlebitis
Phlebitis means inflammation of the veins, and can cause redness, itching, irritation, pain, and swelling.
- Epidermal (sebaceous) cyst
Epidermal (sebaceous) cysts are painless, moveable lumps that form beneath the skin's surface.
- Perichondritis
Perichondritis is an infection of the tissue that surrounds the ear cartilage causing inflammation and pain.
- Thrombocytopenia
Thrombocytopenia causes bruising, frequent nosebleeds, and tiny red dots that look like a rash.