How much do you think "adhd" - "adad" may or may not interfear for joining the service or any other special forces such as the intelligence department?
That will depend on whether you require medication or have been on medication for it. If you require medication you will not be allowed in. If you've taken medication in the past, you have to prove that you can function without it. For example, if you took it in 10th grade, you'd have to show that you kept your grades up in 11th grade. The stipulations are a bit fuzzy but that's the gist of things.
