My ex suffers seizures. After years of bad doctors, he managed to see a neurological specialist who helped him manage his issues. His doctor informed his insurance that treatment was working and his symptoms had regressed - he even managed to earn his driver license back. His insurance took that as "he's better now" and kicked him off. They sent him a bill for thousands of dollars that he had to pay before he could try to get back on his plan. He wasn't able to afford his medication, nor his therapy, and his symptoms came back swinging. I still have a photo of his rejection letter somewhere that I keep as a reminder of how backwards and awful the insurance system is.