A carotid dissection is a tear in the inner layer of an artery in the neck. You have one carotid artery on each side of your neck. These arteries send blood to your brain.

Dysphagia is trouble swallowing normally. A dysphagia diet is a way of eating and drinking that is safer for a person who has trouble swallowing. It helps to prevent aspiration. On a dysphagia diet, only certain kinds of liquids are safe to drink.

Knee pain is very common. Here is general information about symptoms, diagnosis, and treatment.

Thoracic outlet syndrome is a set of symptoms in the shoulder, arm, or hand. It occurs from a narrowing of the thoracic outlet. This is the space between your collarbone and your first rib.

A subconjunctival hemorrhage is when a blood vessel breaks open in the white of the eye. It causes a bright red patch in the white of the eye. It is similar to a bruise on the skin. This type of hemorrhage is common. It can look quite alarming, but it is usually harmless.

Sixth nerve palsy is a problem with eye movement. It happens because of a problem with the sixth cranial nerve. The nerve is also known as the abducens nerve. In some cases sixth nerve palsy is present at birth (congenital). It can also result from other problems that occur later on.

Carnitine palmitoyltransferase (CPT) deficiency is a rare condition that causes muscle weakness and other symptoms. It happens because of a problem with one of two enzymes, CPT1 or CPT2.

A bedside swallow exam is a test to see if you have dysphagia. Dysphagia is trouble swallowing. It can lead to serious problems, such as lung infection.

Aspiration is something entering your airway or lungs by accident. It may be food, liquid, or some other material. This can cause serious health problems. Aspiration can happen when you have trouble swallowing normally. This is called dysphagia. Read on to learn more.

A nuclear medicine scan is a type of imaging test. It's done to help diagnose and treat a number of diseases. This type of test uses small amounts of radioactive matter.