B.S.
I let my son run around naked and he potty trained with in weeks of turning 2. Now we also lived in a really rural area and only had one neighbor so it was okay to let him run around naked. It was also May- so it was warm. I did get him underwear and DID NOT do pull ups unless we were going to the store- because it took us 30 minutes to get there and as soon as we got to the store we went to the bathroom.
I made sure that he liked his Big Boy undies and his cloths were easy to pull up and down and he had no problems doing that. Is it that he doesn't want to pull his clothes on and off or that he can't? If it is that he can't pull his clothes up and down I would speak with the doctor and see if it is normal for him. It just may be that he could care less about trying to take his clothes on and off- my daughter thought it was unfair that my son could go pee behind the garage and she had to come in to go to the bathroom.
I found that giving something that was tangible, but that went away as a reward helped in potty training both of mine, ie my son really liked stickers, but always managed to lose them so every time he went in the potty he got a sticker. You could try that approach with the clothing- it might work:) With my daughter 1 M&M worked wonders after she washed her hands!!!
GOOD LUCK:)
B.
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