The typical post-procedural course is as follow for a Q-switched laser on freckles:
Immediately after the treatment for 5-20min the spot will turn frosty white. This will fade and then turn into something like a mosquito bite which will persist for 1-2 days. Afterward, the brown freckle will become darker, even black. It will look like a scab, but feel like normal skin. At about the 6-10day mark the black freckle will sort of come out of the skin and sit on top like a paper thin scab. DO NOT PICK IT. It will fall off around 10days after the procedure. The spot may be pink which will then fade to normal skin color. I always tell patients that for a given freckle I can remove it in one treatment about 80% of the time.
Depending on the type of QS laser, you may have some bruising. I am not sure what you mean by rough, but that might be the slightly swollen spots or the crusts coming out.
I hope this helps.