If nodules appear on the outside of the root of the big toe, accompanied by redness and pain, they are caused by gout. Gout is caused by abnormal purine metabolism in the body, which means that purines are not metabolized properly in the body after eating meat. The patient presents with increased uric acid in the body and very painful gout nodules on the heel of the toes. The patient needs to be treated with oral allopurinol medication and should not eat seafood, eat as little meat as possible and drink beer during treatment. If there is pain on both sides of the toenail with redness and swelling, it is considered to be caused by nail fungus. If the abscess is small, you can cut and drain the abscess, if the abscess is large, you may also need to remove the nail and change the wound, and take oral antibiotics such as cefixime.