Do I have a case for malpractice regarding not being told all of my options regarding treatment?

Question Details: I went to a dermatologist a few days ago to get his advice on some lesions on my penis/forskin area and some acne on my face. He looked at it and told me to lay on a table. He then told me to drop my pants again, so I did. He proceeded to tell me that he was going to perform a biopsy on my penis in which he was going to cut a piece of it out. I instantly let him know that I was uncomfortable with this and asked him, "Is this absolutely necessary" even though I have autism and it's really hard for me to communicate sometimes especially with strangers. He said yes. He put a needle there and then cut a piece off. He later told me that he was going to give me some gel to put on my face and some pills for the acne I have on my face; he was almost certain that the pills he was going to give me for my face will help with whatever I had on my penis too. I feel like it was not absolutely necessary, if he thought the pills would have helped, he should have told me that first instead of doing what he did. If he would have told me about the pills and that it might of helped, I would of never gone through with the biospy on my penis, I would have done the pills first. I asked him if it was absolutely necessary and he said yes and now I feel like I got lied to because I never would have agreed to that if I knew there were options.

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