- Bruise or contusion
Bruises, or contusions, cause skin discoloration, swelling and tenderness.
- 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.
- Mastitis (infectious)
Mastitis, an infection of the breast, causes pain or swelling of the breast, fever, and flu-like symptoms.
- Nipple stimulation
Nipple stimulation can cause red, irritated, hard or erect, and sensitive nipples, and even discharge.
- Allergic reaction
Allergic reaction causes sneezing, runny nose and hives and can lead to anaphylaxis, a whole body reaction.
- 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.
- Trauma or injury
Trauma most often refers to serious bodily injury or wounds symptoms range depending on the injury.
- Thrombocytopenia
Thrombocytopenia causes bruising, frequent nosebleeds, and tiny red dots that look like a rash.