Hi, I had gone through your question and understand your concerns. Yes, this may be smegma or some dermatologic disease but also fungal infections may be considered. I think that you should apply Nistatin cream for 1 week and keep a good hygiene. Also, if there wont be improvement it woul dbe good to see dermatologist or urologist for further evaluation. You should during the shower gently remove all white patches and clean it with mild soap and warm water. After this pull back foreskin to cover penis head. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.