What could cause numbness on the right side of head going into your neck when you lie left side?
Numbness on the right side of the head and neck when lying on the left side can be caused by several factors. Here are some possible causes:
1. Pinched Nerve:
- A pinched nerve (cervical radiculopathy) in the neck can irritate and put pressure on nerves that supply the right side of the head and neck. This can cause sensations of numbness and discomfort when pressure is applied to the affected nerve.
2. Muscle Spasm:
- Muscle spasms or tension in the neck or shoulder muscles can compress nerves and blood vessels, resulting in numbness on the right side of the head and neck. This may be associated with poor posture, prolonged sitting or standing in an awkward position, or underlying muscle imbalances.
3. Vertebral Artery Dissection:
- Vertebral artery dissection is a rare but serious condition where the lining of the vertebral artery, which supplies blood to the brain, becomes torn. This can disrupt blood flow and cause neurological symptoms, including numbness on the right side of the head and neck, dizziness, difficulty swallowing, and visual disturbances.
4. Cervical Spondylosis:
- Cervical spondylosis refers to the age-related wear and tear of the bones, joints, and discs in the neck. As these structures degenerate, they can narrow the spinal canal or foramina (openings where nerves exit the spine) and create pressure on nerves, leading to numbness and other symptoms.
5. Herniated Cervical Disc:
- A herniated cervical disc occurs when the soft, inner material of a spinal disc leaks out and presses on a nearby nerve. If the affected disc is situated on the right side of the neck, it can lead to numbness on the same side of the head and neck.
6. Thoracic Outlet Syndrome:
- Thoracic outlet syndrome is a condition characterized by compression of blood vessels or nerves in the thoracic outlet, the space between the collarbone and the first rib. It can cause pain, numbness, and tingling in the neck, shoulder, and upper arm, as well as the right side of the head.
7. Transient Ischemic Attack (TIA):
- A TIA is a temporary interruption of blood flow to the brain, which can cause sudden numbness or weakness on one side of the body, including the head and neck. It serves as a warning sign of an impending stroke and requires immediate medical attention.
If you experience persistent numbness on the right side of your head and neck when lying on the left side, it's important to consult a healthcare professional for an accurate diagnosis and appropriate treatment. The underlying cause can be determined through a physical examination, medical history, and imaging tests, if necessary. Depending on the diagnosis, treatment may involve medications, physical therapy, lifestyle changes, or surgical intervention in severe cases.