About 2 weeks ago i developed a thumb twitch in my dominant hand. For the first few days it was relentless. And it has since slowed down. If i clench my thumb and finger together it makes the twitch happen. I made the mistake of googling. And finding ALS as a cause. I have convinced myself my hand now doesn't function like it used to. I believe cause i am hyperfocused on it. I have cut out all caffeine for a week, upped my water intake, proper sleep, vitamins.. etc and had false hope it would go away. Im on a bad rabbit hole for fear of ALS. How long is too long for a twitch? Should i be afraid of it being ALS... its ruining my life.