Paresthesia is a sensation, usually felt on the skin, often described as numbness, tingling, pins and needles, or prickling. It is commonly referred to as a limb “falling asleep”. Chronic paresthesia may result from poor circulation, nerve irritation, or neuropathy among other causes. Transient paresthesia may be a symptom of hyperventilation syndrome or a panic attack.
Paresthesia. Paresthesia. http://www.paresthesia.net/