Often when you sleep in the wrong position or sit cross-legged for a long time, you must have experienced a tingling sensation in your hands or feet. The cause of tingling feet and hands, in this case, is the pressure on nerves that gives you a pins-and-needles sensation. Although this is not a serious health hazard, if the tingling sensation continues for a long time, it might be time to consult a doctor. One of the leading causes of tingling feet and hands is damage to the nerves. The nerves could be damaged due to various reasons. Tingling feet and hands do not often require any invasive treatments and can be easily treated with physiotherapy and medications. Here a few causes of tingling feet and hands and how to deal with them: Carpal tunnel syndrome : Carpal tunnel syndrome is caused due to the compression of a nerve in the wrist. It can usually occur if you spent too much time typing, working with power tools or play sports such as tennis or badminton. The compression of the nerve causes tingling in hands. Carpal tunnel syndrome is diagnosed with an EMG test and ultrasound. It can be treated with anti-inflammatory medications and physical therapy.