Minocycline
"I took this medication when I was 16 for acne. I was getting headaches that the dermatologist said couldn't possibly be from the minocycline. I woke up after being on it for 6 weeks with double vision. I had pseudotumour cerebri (intercracial hypertension). I have suffered with recurrent headaches ever since. I am now 43. Last year I was diagnosed with a chiari malformation last year that was caused by pseudotumour cerebri. I also have syringomyelia that was caused by the chiari malformation. This is a very dangerous medication. I will eventually be in a wheelchair and will not be able to care for myself because I took minocycline at age 16."