What causes the right side of face to suddenly droop and get double vision?

Sudden facial drooping and double vision can be a sign of a serious medical condition, such as a stroke, and should be evaluated by a doctor immediately. Some possible causes of sudden facial drooping and double vision include:

- Stroke: A stroke occurs when the blood supply to a part of the brain is interrupted, causing brain cells to die. When a stroke affects the nerves that control facial muscles, it can cause the face to droop on one side. Double vision can also occur with a stroke, as the brain may have difficulty processing visual information correctly.

- Bell's palsy: Bell's palsy is a condition that causes temporary weakness or paralysis of the muscles on one side of the face. The exact cause of Bell's palsy is unknown, but it is thought to be caused by a viral infection that damages the facial nerves. Bell's palsy can cause facial drooping and double vision, as well as pain behind the ear and difficulty closing the eye on the affected side.

- Myasthenia gravis: Myasthenia gravis is a chronic autoimmune disorder that affects the communication between nerves and muscles. It can cause weakness in the muscles of the face, including the muscles that control eye movement, leading to facial drooping and double vision.

- Tumors: A tumor in the brain or near the facial nerves can cause facial drooping and double vision. The pressure from the tumor can affect the nerves that control facial muscles and eye movement, leading to these symptoms.

- Head injury: A head injury can damage the nerves that control facial muscles and eye movement, causing facial drooping and double vision.

- Aneurysm: A ruptured aneurysm in the brain can put pressure on the nerves that control facial muscles and eye movement, causing facial drooping and double vision.

If you experience sudden facial drooping and double vision, it is important to seek medical attention immediately. The doctor can evaluate your symptoms and determine the underlying cause, which will guide the appropriate treatment.