Pityriasis rosea is a type of skin rash. It starts with 1 large round or oval scaly patch called the herald patch, and then causes many more small patches.

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.

The speech centers of the brain help coordinate what a child would like to say. With apraxia of speech, something in this process goes wrong. Read on to learn more.

Chlorhexidine gluconate (CHG) is a cleaning product that kills germs. Daily bathing with CHG in the hospital helps keep infections from spreading. CHG bathing is especially helpful for patients in intensive care units (ICUs).