Hello dear, Thank you for your contact to health care magic. I read and understand your concern. I am Dr Arun Tank answering your concern. It is likely to be the inguinal lymohnode swelling or hernial swelling. But most likely it is lymph node swelling. It is common in infection. So do not worry take antibiotics regularly. Good hygiene of the boy is necessary,, please told him to take daily bath. Good diet consisting of high protein and carbohydrate can also help. Avoid spicy and oily food. Greencleafy vegetables and fruits can also help. I will be happy to answer your further concern on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious diseases specialist, HCM.