A fusion is a surgery to join two or more bones together. During a transforaminal lumbar interbody fusion (TLIF), this is done on the spine. Two of the bones of your back (vertebrae) are joined together, and one of your spinal disks is removed.

Selective mutism is when a child can't speak in certain settings but can speak fine in others. For example, a child may not be able to speak at school but can speak with no problem at home. It is called selective mutism because the child is only mute in certain situations.

Sixth nerve palsy is a problem with eye movement. It happens because of a problem with the sixth cranial nerve.

Safe surrender means giving up a baby in a safe way when you're not able to care for them. Safe surrender laws help babies be safely given up. The goal is to make sure a baby is safe, and not hurt or abandoned in a dangerous way. Read on to learn more.

Radiofrequency ablation (RFA) is a procedure that destroys cells in the esophagus that may turn into cancer. It can help prevent or treat cancer of the esophagus.

Lice are small insects that feed on human blood. They attach themselves to hair. Those that infest hair in the groin area are called pubic lice.

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. 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.