There can be several causes for tingling in the hands and feet, most of which are underlying medical conditions. Some of these conditions indicate the possibility of a potential life-threatening issue and it is prudent to see your doctor as soon as possible.
Lack of Blood Supply
A lack of proper blood supply to the extremities can cause tingling in the hands and feet. The reasons for a lack of blood supply can vary. It can be as simple as having cut off your circulation by sleeping or sitting in the wrong position, or it can be something as serious as a plaque build-up in your blood vessels.
The medical term for plaque build-up in the blood vessels is arteriosclerosis. This is condition needs to be both diagnosed and treated by a doctor.
A nerve injury is another serious reason for tingling in the hands and/or feet. If you suspect this as a cause, it is also important to be aware or any other potential symptoms that you are experiencing in surrounding areas, such as numbness or a loss of sensation or muscle strength.
Diabetes, if left untreated, not only affects the insulin levels in the human body, it also has the potential to have serious adverse affects on the nervous system. If the nervous system has indeed been affected by this disease, tingling in the hands and feet may occur.
Low Electrolyte Levels
The human body is unique and fascinating and needs to remain properly balanced in order to run optimally. This proper balance includes electrolyte levels, something that can be traced through the blood. Electrolyte levels include sodium, potassium and magnesium. If any, or all, of these levels become too low, individuals may potentially experience a tingling in their hands and feet.
Lyme disease, caused by a tick bite, has many symptoms including (but not limited to) muscle and joint aches, fatigue and a circular rash on the skin. Typically, tingling in the extremities does not occur in the early stages, but if left untreated, an advanced case of Lyme disease may result in this symptom. This prickly sensation comes as a result of the Lyme disease infection crossing over into the central nervous system of the body.
A poorly working thyroid may be another cause of tingling in the feet and hands. Although this symptom can occur in the feet, usually the tingling associated with a thyroid disorder will be experienced in the hands.
When anxiety hits, the heart rate speeds up and breathing grows shallow. As a result of this shallow breathing, a loss of blood flow to the extremities will take place, resulting in tingling in the fingers, toes and sometimes even the lips. Unfortunately, these sensations may only exacerbate the anxiety, causing even more tingling as the anxiety builds.