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Right bundle branch block comes from a problem with the heart's ability to send electrical signals. It usually doesn't cause symptoms unless you have some other heart condition. Read on for details about this condition.

A seborrheic keratosis is a growth on the skin. The growth is not cancer (benign). Its color can range from white, tan, brown, or black. Seborrheic keratoses often appear on a person’s chest, arms, back, or other areas. They’re very common in people older than age 50, but younger adults can get them as well.

Simple kidney cysts are fluid-filled sacs that form in your kidneys. These cysts usually don’t affect how the kidneys function.

Sinus bradycardia is a type of slow heartbeat. Read on to learn more about this condition, including causes, risk factors, symptoms, diagnosis, and treatment.

Sixth nerve palsy occurs when the sixth cranial nerve is damaged or doesn't work right. It's also known as the abducens nerve. This condition causes problems with eye movement.

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.

A subdural hematoma is a buildup of blood on the surface of the brain. Read on for details about this condition, including causes, who's at risk, symptoms, diagnosis, and treatment.

Takayasu's arteritis is an autoimmune disease. It causes inflammation of the large arteries. It's a rare disease that's most common in women and people of Asian descent.

Thoracic outlet syndrome is a squeezing of nerves or blood vessels between the collarbone and first rib. Symptoms: arm pain, tingling, swelling, or color or temperature changes, often worse with overhead use. Most improve with physical therapy. Seek urgent care if an arm is cool, pale, or swollen.