Medical conditions that disqualify someone from piloting?

If your a danger: Think of things that would cause you to be a danger to yourself, your passengers, other pilots and the people on the ground. Seizure disorder, uncontrolled heart disease or hypertension, psychiatric conditions, etc. Check the faa's website or with a pilot group like the aopa. Also talk to your local ame.

Certain heart conditions, psychiatric conditions, drug abuse, neurologic conditions including epilepsy, and some forms of diabetes can be disqualifying. Look at https://www.faa.gov/faq/what-medical-conditions-does-faa-consider-disqualifying-0 and go from there. Not all conditions are permanently disqualifying.