What causes tingling?
Tingling can be caused by a wide variety of conditions. The most common cause of tingling is a compressed nerve. Other causes of tingling include head and neck injuries, loss of blood flow to an area, vitamin or mineral deficiencies, and diseases such as multiple sclerosis (disease that affects the brain and spinal cord, causing weakness, coordination and balance difficulties, and other problems), among many other causes.
Compression-related causes of tingling
Tingling may be caused by compression injury including:
- A fracture or dislocation that compresses a nerve
- A herniated disk that compresses a nerve
- A neck or back injury that compresses or injures the spinal cord or a nerve
- Carpal tunnel syndrome
- Head injury that causes pressure or swelling
- Pressure on a nerve from a growing mass or tumor
- Remaining in the same position for too long, resulting in a compressed nerve
Disease-related causes of tingling
Tingling can also be caused by a variety of diseases or conditions including:
- Diabetes (chronic disease that affects your body’s ability to use sugar for energy)
- Inactive or underactive thyroid (hypothyroidism)
- Infections such as shingles (herpes zoster virus)
- Migraine headache
- Multiple sclerosis (disease that affects the brain and spinal cord causing weakness, coordination and balance difficulties, and other problems)
- Raynaud’s phenomenon (spasms of small blood vessels of the fingers and toes, reducing blood circulation; Raynaud’s phenomenon is secondary to many autoimmune disorders such as lupus)
- Seizures or convulsions
- Transient ischemic attack (temporary stroke-like symptoms that may be a warning sign of an impending stroke)
Other causes of tingling
Tingling can also be caused by a variety of other conditions including:
- Alcohol or tobacco abuse
- Deficiency or excess of various minerals such as calcium, sodium or potassium
- Heavy metal poisoning
- Medication side effects or interactions
- Radiation exposure or radiation therapy
- Vitamin B12 deficiency
Serious or life-threatening causes of tingling
In some cases, tingling may be a symptom of a serious or life-threatening condition that should be immediately evaluated in an emergency setting. These conditions include:
- Head, neck or back injury
Questions for diagnosing the cause of tingling
To diagnose your condition, your doctor or licensed health care practitioner will ask you several questions related to your tingling including:
- When did you first notice the tingling?
- Have you had any recent injuries that preceded the tingling?
- Do you have any other symptoms associated with your tingling?
- Where on your body do you notice the tingling?
- Is the tingling better or worse at any certain time of day?
- Is the tingling improving or getting worse?
- Do you get the tingling when doing a repetitive motion, such as typing or sitting for long periods?
- What medications are you taking?
What are the potential complications of tingling?
Tingling is a sign that your nerves are malfunctioning. The complications of tingling vary widely, depending on the underlying cause.
Because tingling can be due to serious diseases, failure to seek treatment can result in serious complications and permanent damage. Once the underlying cause is diagnosed, it is important for you to follow the treatment plan that you and your health care professional design specifically for you to reduce the risk of potential complications including:
- Coma or unconsciousness
- Loss of vision and blindness
- Spread of cancer
- Weakness (loss of strength)
Numbness and tingling. Medline Plus. http://www.nlm.nih.gov/medlineplus/ency/article/003206.htm. Accessed May 28, 2011.
NINDS paresthesia information page. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/paresthesia/paresthesia.htm. Accessed May 28, 2011.
What is tingling?
Tingling (paresthesia) is an unusual sensation most commonly felt in your hands, feet, arms and legs. Tingling is often associated with numbness, or a decrease in the ability to feel or sense pressure or texture.... Read more about tingling introduction