During stretching, there is often a change in feeling or unusual feeling called paraesthesia. The most common causes of paraesthesia during stretching are:
- long compression of the femoral or sciatic nerves - sitting in one position during passive stretching
- long compression of blood vessels - as above
Most often, paresthesias quickly disappear after leaving the position or changing the position, and often when leaving the position or changing the position, we feel tingling - which is not pleasant, and is related to the reception by neuroreceptors (cells responsible for collecting information, among others from the internal organism) multiple pieces of information / pulses at once. Paresthesias caused by the compression of blood vessels may be accompanied by a change in the color of the skin to white - yellow, which indicates a temporary ischemia of the skin. When paresthesia arises, you should not hold the position and you should immediately get off the position or change the position and it is best to come for a while so that the body has a chance for proper blood supply to the given part of the body.
And now more specifically about the phenomenon of paresthesia, because the tendency to frequent paresthesia may be a symptom of other disorders and how strong and frequent they are, this phenomenon should be better looked at.
There are many causes of limb paresthesia. These are among others:
- Staying in one position (sitting or standing) for a long time.
- Nerve injuries - for example, an injury to the neck area causes tingling or numbness of the skin around the upper limbs, while a lower back injury is associated with lower limb paraesthesia.
- Spinal nerve compression (for example, herniated disc).
- Peripheral nerve compression, caused by enlargement of blood vessels, cancer or infection.
- Restriction or complete cut off of the blood supply - for example, atherosclerosis can cause pain in the legs, numbness and tingling, and frostbite restricts the blood supply.
- Abnormal amounts of calcium, potassium and sodium in the body.
- Vitamin deficiency, for example vitamin B12.
- Use of certain medications.
- Damage to the nervous system from toxic substances, e.g. lead, alcohol, cigarettes.
- Radiotherapy.
When are paresthesias serious?
Tingling or numbness in the limbs and other parts of the body can happen to almost everyone, but is sometimes a symptom of more serious medical conditions. It is worth visiting a doctor when:
- Weakness or paralysis develops along with numbness or tingling.
- The person has experienced head, neck and back trauma.
- You have had a prolonged loss of control of your leg or arm movements.
- You have become unconscious or lightheaded.
- The following problems have occurred: stuttering, slurred speech, changes in vision, difficulty walking.
Summary
Basically, there's nothing to be afraid of, but you should watch yourself.
I don't know a single person who hasn't had stretch paresthesia.
With time, when the nervous and circulatory systems become more flexible and adapt to the activity called stretching, paresthesia should be less frequent. If paresthesia occurs in one particular position, you should consider whether:
- we have a good body position
- whether shifting (or body parts) to one side or the other would not avoid paresthesia
- there is no other exercise to stretch a particular muscle that would not cause paresthesia.
Nevertheless - Enjoy Your stretching!
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