That is an excellent question and one that is best answered by your primary care doctor
or another medical professional after obtaining a complete history and physical examination to determine the cause of these symptoms and the appropriate treatment options available. What you are describing with the gap in your thumb and the pain caused by it sounds very concerning and I am sure that it is also very painful. Hopefully some of these suggestions will help until you see your doctor who can help you treat this appropriately. Have you had any other signs of infection or signs that this thumb issue is spreading further back in the hand or to other parts of the body? If this is the case, this can be more serious and may need to be evaluated sooner rather than later. Have you noticed any drainage from the thumb or any changes to the nail or the nail bed. This can also be a big problem and one that you want to get treated soon because damage to the nail can sometimes lead to irregularly growing nails or nails that fall off. When you see your doctor, he or she may recommend antibiotics or topical treatment options which might help with your problem.