What happens in the body when a limb is "numb" and tingling is felt?

What happens in the body when a limb is "numb" and tingling is felt?

Mayo Clinic Minute: What may be causing your hands and feet to tingle

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answers (2)

Answer 1
March, 2021

This tingling sensation is scientifically called paresthesia.

Transient paresthesia is usually caused either by direct mechanical irritation of a superficial nerve, for example, by impact or pressure (did you hit the table with your elbow?) or with a temporary violation of blood supply limbs, leading to a change in the conduction of nerve impulses, for example, during a prolonged stay in an uncomfortable position, often during sleep.

Chronic paresthesias often occur as symptoms of lesions of various parts of the nervous system.

We were also told by a neurologist about park bench syndrome) This is when alcohol works as a muscle relaxant in a state of intoxication and during sleep a nerve is compressed between the bone and the hard surface on which you sleep, or, for example, another limb. Then paresthesias can last up to several days.

A couple of times I fell asleep drunk with my head on my arm and woke up, completely not feeling it, there were strong paresthesias in my legs. I thought with fright that it was my multiple sclerosis that was beginning))

Answer 2
March, 2021

The supply of oxygen to tissues decreases. Nerve cells and blood vessels are compressed. And the first to react to this are nerve cells, as far as I remember.

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