Numbness and tingling are unusual sensations that can occur anywhere in your body, often felt in the hands, feet, arms, or legs. These sensations, medically known as paresthesia, can be caused by various factors. Common causes include sitting or standing in one position for too long, which puts pressure on nerves. Other causes can be more serious, such as diabetes, multiple sclerosis, or nerve injuries. In some cases, conditions like frostbite, shingles, or a herniated disc can also lead to numbness and tingling. If you experience these sensations frequently or without an obvious cause, it's important to consult a doctor. The doctor will take a complete medical history and may order tests such as blood tests, nerve conduction studies, or imaging tests like MRI or CT scans to determine the underlying cause. Treatment will depend on the diagnosis and may include medications, physical therapy, or other interventions to address the root cause. It's also important to protect the affected areas from injury, as reduced sensation can make you less aware of temperature changes or pain.