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What're the symptoms of paresthesia?

Paresthesia is a burning or prickling sensation that is usually felt in the hands, arms, legs, or feet, but can also occur in other parts of the body. The sensation, which happens without warning, is usually painless and described as tingling or numbness, skin crawling, or itching. Sensory nerves supply or innervate particular regions of the body. Determining the distribution of symptoms is an important way to identify the nerves involved. For instance, the median nerve innervates the thumb, the first two fingers, half of the ring finger, and the part of the hand to which they connect. The ulnar nerve innervates the other half of the ring finger, the little finger, and the remainder of the hand. Distribution of symptoms may also aid diagnosis of the underlying disease. Diabetes usually causes a symmetrical "glove and stocking" distribution in the hands and feet. Multiple sclerosis may cause symptoms in several, widely separated areas. Other symptoms may accompany paresthesias, depending on the type and severity of the nerve disturbance. For instance, weakness may accompany damage to nerves that carry both sensory and motor neurons. (Motor neurons are those that carry messages outward from the brain.)

More information on paresthesia

What is paresthesia? - Paresthesia (paraesthesia) is a sensation of tingling, pricking, or numbness of the skin with no apparent physical cause.
What causes paresthesia? - Paresthesias are caused by disturbances in the function of neurons in the sensory pathway. Peripheral disturbances are the most common cause of paresthesias.
What're the symptoms of paresthesia? - Paresthesia is a burning or prickling sensation. Other symptoms may accompany paresthesias, depending on the type and severity of the nerve disturbance.
How is paresthesia diagnosed? - A careful history of the patient is needed for a diagnosis of paresthesias. Distribution of symptoms may also aid diagnosis of the underlying disease.
What's the treatment for paresthesia? - Treatment of paresthesias depends on the underlying cause. Several alternative treatments are available to help relieve symptoms of paresthesia.
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