Yes, it is possible to develop carpal tunnel syndrome at the age of 21. Carpal tunnel syndrome is a condition that affects the hand and wrist, typically caused by compression or trauma to the median nerve. It can be triggered by various factors such as arthritis, hand injuries, hormonal changes, or repetitive hand and wrist movements. Symptoms can include tingling, numbness, pain, swelling of the fingers, and reduced sensitivity. If you are experiencing intense pain and symptoms, it is recommended to consult a doctor for a thorough evaluation and proper treatment. In the meantime, you can use pain relievers like Tylenol and apply cold compresses to reduce swelling if needed.