What causes a Charlie Horse?
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Definition
A charley horse is the common name for a muscle spasm, particularly in the leg. Muscle spasms can occur in any muscle in the body. When a muscle is in spasm, it contracts involuntarily and does not relax.
Causes, incidence, and risk factors
Muscle spasms commonly occur when a muscle is over-used or injured. Working out when dehydrated or with low levels of minerals such as potassium or calcium can also predispose a person to muscle spasms.
Some spasms occur because the nerve that connects to a muscle is irritated. The classic example is a herniated disk irritating spinal nerves as they exit the back, causing pain and spasm.
Spasms in the calf commonly occur while kicking during swimming and can also occur at night while in bed. Upper leg spasms are more common with running or jumping activities. Spasm in the cervical spine (neck) can be a sign of stress.
Symptoms
When a muscle goes into spasm it feels very tight and is sometimes described as a knot. The pain can be severe and debilitating.
Signs and tests
Muscle spasms are diagnosed by the presence of tight or hard muscles that are very tender to the touch. There are no imaging studies or blood tests that can diagnose this condition. If the spasm is caused by nerve irritation, such as in the back, an MRI may be helpful to determine the cause of the irritation.
Treatment
At the first sign of a muscle spasm, stop your activity and try stretching and massaging the affected muscle. Heat will relax the muscle at first, although ice may be helpful after the initial spasm and pain has improved. If the muscle continues to be sore, non-steroidal anti-inflammatory medications may help with pain. In more severe cases, your health care provider may prescribe anti-spasm medications.
After initial treatment, the cause of the spasm should be determined to prevent it from recurring. If an irritated nerve is involved, physical therapy or even surgery may be necessary.
The most common cause of muscle cramps associated with sports activity is dehydration. Often, rehydration with water or sports drinks will resolve the cramping.
Expectations (prognosis)
Muscle spasms will resolve with rest and time. The outlook is excellent for the vast majority of people. Proper training techniques should prevent spasms from becoming a chronic problem. If an irritated nerve caused the spasm, more extensive treatment may be required and results are more variable.
Calling your health care provider
If you have a severe muscle spasm with uncontrollable pain, contact your health care provider for assistance. Even if your spasms are not severe, your health care provider can help you modify your exercise program to reduce the risk of spasms occurring in the future.
Prevention
Stretch to improve flexibility.
Modify your workouts to exercise within your capabilities.
Drink plenty of fluids while exercising and increase your potassium intake (orange juice and bananas are great sources of potassium).
Growth
Happens a lot to athletes. It's caused by a minor stoppage of blood reaching thearea where you get a charlie horse. THe muscles constrict in reaction, so that's the tight feeling you get.
This is a good question that I've often wondered about. But I think it is exceesive stress placed on the hamstring or calf from excercise and lack of streching afterwards or poor fluid intake.
low potassium, I was told to eat banana's when I get them, it helps.
Low levels of potassium. I have them all time. If i dont eat bananas it gets so bad that sometimes both legs and feet will go at the same time and my wrists hurt. But if you get a charlie horse try pushing ur heel out forward. it may be hard at first but it ends quickly if you do that. :)
Muscle cramps – also known as a Charlie horse, is a sudden, painful muscle contraction of a muscle that can be so intense that we can´t use the muscle until the cramp eases. It can be caused by a lack of magnesium, or a potassium deficiency. But beware – it can also signal the onset of vascular disease, so if you find that you are cramping more than usual, please check this out. Kidney dialysis can also bring them on.
A fun trick to do it get a syringe full of calcium ions and inject it in someones leg, it will give them a muscle cramp that they will never forget. But don't do it .
I heard dehydration.
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