4.Circulation problems and tingling
In patients with fibromyalgia, one of the most uncomfortable problems is feeling constant tingling in the skin, usually in the upper or lower limbs. This sensation is reported by around 30% of patients with fibromyalgia, and it is sometimes linked with circulation problems. In other cases, the sensation comes from the nervous system, and it is known as paresthesia.
One way to know if this tingling is circulatory or nervous in patients with fibromyalgia is by evaluating if the patient also has muscle spasms and a sensation of stiffness when experiencing the symptom. If they do, there is probably a nervous cause. In other cases, there is a compression of the blood vessels similar to what happens when you put on a cold compress for a long time. This is known as cold-induced vasospasm, except that fibromyalgia patients trigger this problem without cold temperatures. The exact cause is obscure and difficult to explore, but the symptom is more common still in patients with diabetic neuropathy, multiple sclerosis, and other nerve-related problems.