You
must see a doctor or go to a clinic to be properly diagnosed
before you can be treated for any of these. When your
teacher talked about mental illness, he was probably referring
to syphilis, which can lead to mental illness if left
untreated for many years.
You
do not say whether you are sexually active or not. If
you are not and have not had sex in the past, it is impossible
for you to have an STD. In this case, the pimples may
be a simple infection or allergy caused by, for example,
using scented soaps or wearing synthetic fabric underwear.
Try washing frequently with a pure soap and wearing cotton
pants which you change every day.
If
you are sexually active and fear that the pimples may
have come about from sexual contact, you need to be diagnosed
and receive treatment as soon as possible.
