adhd
"My internist gave me methylphenidate (the active ingredient in Ritalin) for an ADHD disorder that I didn't even know I had. My God! My world finally made sense, and I was able to finally concentrate on a single task without having something pull me away for no earthly reason. And on top of that, the peripheral neuropathy in my feet, courtesy of a few early drugs in the HIV era, disappeared... totally. I didn't even need my methadone until I began to develop a tolerance for the methylphenidate. I'm the only person my pharmacist has heard of who experienced this effect, but I am sure not complaining. This is truly a miracle drug for me, but since I went to a larger insurance company, with it's own doctors, it's been refused  it to me."