Hi Thanks for your query You seem to have developed a localized area of infection at the injured site. I would advise that you should start with proper cleaning and treatment right away lest the lesion may turn into cellulitis. We can try conservative treatment first but if the condition continues to worsen , then you might need to consult a physician. Avoid touching it too much. Avoid using any kind of cold dreams or hair oils, as it might increase the lesion. You can start using any topical antibiotic/antiseptic cream(like mupirocin cream) over the lesion for 2-3 days . Take some pain killers along for relieving the associated pain and discomfort. Oral antibiotics are required if the infection increases, which a dermatologist / physician can examine and suggest. Take care Wishing you speedy recovery Dr Geetika Paul