During my high school, I have always reached medium to good grades (my average is 8,5/10, while the highest mark in my school is 9,1/10). However, in the beginning of this year, I found out that I have attention deficit disorder. According to my hs counselor, if I had taken medication since the beginning of high school, as some friends of mine (legally) did, I would probably reach higher marks. Do universities take this in consideration while analyzing my GPA? Is important mentioning that I am going to apply for highly selective colleges, such as Harvard, Princeton, Columbia, UC Berkeley, Georgetown, UPenn, and others.