Psoriatic arthritis is joint pain and swelling that occurs in some people who have psoriasis. Psoriasis is a skin disease that causes scaly skin patches. People who have psoriasis may develop psoriatic arthritis later.

After an injection, swelling and irritation (inflammation) can occur at the site where the needle entered the skin. This reaction can be from the needle or the medicine that was injected. Or it may be a reaction to both.

Pityriasis rosea is a type of skin rash. Learn about the causes, symptoms, and treatment of this rash.

An ulcer can go through all the layers of the digestive tract and form a hole (perforation). This is called a perforated ulcer. This is a serious health problem that needs urgent medical attention.

Molluscum contagiosum is a skin infection caused by a virus. It causes small bumps on the body. Children and young adults are most often affected.

Sometimes a type of skin cancer called melanoma can grow in or near the mole. In other cases, a mole may be bothersome. In either case, removal (excision) of a problem mole can be done.

Mohs surgery is done to help treat skin cancer. Read on to learn more.

CVS is very common. Your eyes may itch and tear, or be dry and red. You may not be able to focus well. These problems are the result of a lot of computer use.

Your retina has special cells that detect color. If you have a problem with these cells, you may not be able to see some colors.

Choroid plexus papilloma (CPP) is a rare type of brain tumor. It is generally benign (not cancer). Benign also means that the growth does not spread to other parts of the body. CPP are generally slow-growing tumors. It is very rare for this type of tumor to spread outside the brain.