Hello, As per my clinical experience, as there was need of small surgery for cold abscess, most possible issue of concern is immune deficiency of T and or or B cells , responsible for controlling various bacterial, viral, fungal infections. After thorough clinical examination, I do recommend detailed evaluation with: - Complete hemogram with ESR - Fasting blood sugar - T and B cell numbers with any abnormal morphology - X-ray chest (PA view) to look thymus shadow - Ultrasound of the Abdomen Pelvis Though definite therapy requires clinical examination, my primary guidelines: - Keep hygienic care for face - Allow him boiled water, lemon juice - Prefer balanced nutritious diet - Anti histamine as cetirizine syrup, prophylactic or curative antibiotics, supportive multi vitamins, minerals, anti oxidants - Choice of antibiotics is subject to variation who is examining Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon