Tension headaches are the most common type of headache. Stress and muscle tension are often factors in tension type headaches.

Thoracic outlet syndrome is a variety of symptoms that happen from a narrowing of your thoracic outlet—the space between your collarbone and your first rib. It can result from injury, disease, or a problem you had from birth.

A tilt table test is a test done to evaluate symptoms of syncope (fainting) by creating changes in posture and see how your heart and blood pressure respond.

Transverse myelitis is inflammation and scarring of the spinal cord that causes pain and weakness in the body.

A traumatic brain injury is caused by a blow to or penetration of the head resulting in brain damage. Read on to learn about diagnosis, symptoms, and treatment.

Trigeminal neuralgia is a type of nerve pain that affects your face.

Encephalitis is an inflammation of the brain. It is often caused by a viral infection. The arboviruses cause encephalitis. They are passed on to people and animals by insects.