Hello dear I understand your concern Boil is most common by the bacterial infection of the hair follicle.(staphylococcus infection). Examination by the general physician will help in the management. First you have to apply bacitracin ointment and warm pad application. Once it become soft, it will be drained by applying pressure. Take tablet amoxiclav to prevent the spread of the infection. Wear pure cotton loose inner and avoid sweats in the affected area. You can play squash if you have no pain while playing. If during play, it will hurt then you should avoid till the infections resolves. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar