Numbness in the Extremities
General or Other | - Others | Numbness in the Extremities (Symptom)
The numbness may occur in the fingers, face, feet, arms and other extremities. It is usually the result of conditions that affect the nerves and / or blood vessels that supply those members. Numbness is often associated with tingling. These symptoms are known as paresthesia. This phenomenon may be given other names such as: loss of sensation, loss of sensation, numbness and tingling, numbness or burning, or loss of superficial and deep sensitivity. Paresthesias are normal due to positions where long press a limb, may also be secondary to neurological or vascular disease.
Paresthesia, tingling and numbness are feelings that are part of the same phenomenon but at different stages. They are so closely related that when a person feels a tingling it is usually accompanied, later, by numbness.
A case of numbness occurs when someone sleeps a few hours and, unintentionally, when turning around a part of the body weight is supported in a bad flexed arm for instance. The physiological paresthesias occur more frequently when sleeping.
Some conditions that affect normal nerve signaling can cause numbness in the extremities. Among them vitamin B12 deficiency, herniated disk and transient ischemic attack can be mentioned.