I recently noticed that my pinky on one hand seems to twitch
uncontrollably. This really scares me and I wonder if I am going to get
parkinsons or alzheimers. I'm only 24 years old, and otherwise very
healthy.

I don't have any medical insurance, so I thought that I'd ask about it
here first. Is it likely that the pinky tremors are the beginning of a
disease? They seem to come and go. When it starts to twitch at work, I
try to hide it or grip onto something tightly and it goes away after a
few seconds.

I find this terrifying. Please tell me what the causes and/or cures
could be.