I was wondering what is involved in getting a special issuance if I have headaches? I have had headaches all my life, but have always checked "no" to that question on the application because they have never been severe or frequent( 2-4 per month). However, it has been 20 years since my last flight physical, and the headaches are now frequent by anyone's definition (2-3 per week) although still not severe. I have had a CAT scan with and without contrast and nothing abnormal was found. Do I have to jump through a lot of expensive hoops to regain my 3rd class medical? (I have never been denied.) Thanks