This looks like a sebaceous cyst

Can help you, kindly consult and provide detailed history for proper diagnosis and further management

The history and photo suggests it to be sebaceous cyst which might have got infected. Please contact for next course of action

Connect please

Need few more details Kindly consult

According to your query and sign and symptom you want to know about the disease and cause and it's best Treatment of lump and infection in the old wound. Please take consultation for better evaluation and best Treatment as it need complete history of patient as personal and family history. Please follow good life style as • take plenty of fluid and • take less spicy and fatty foods and • take home made food only and do exercise regularly with yoga and meditation and • keep positive attitude to fight any disease and any problem of your life .