I have had the same problem ever since I can remember and have mentioned it to my doctors and they didn’t know what caused it. I notice it when I’m using the laser light to play with my cats and I always start laughing so hard and then I can’t hold the button in because I lose all my strength in my hands. It will come back in a few minutes but is frustrating when it happens.
Like most people here I’ve had this for a long time, never really thought anything of it until it hindered me from taking notes in class a year or so ago. I read about cataplexy and pinched nerbed but I just don’t have the symptoms. Someone misspronounced something and I found this really funny while I was using the PS4 controller and I had to quit the game cause my hands would not cooperate. I really hope someone studies this because there are quite a few posts on this site alone— it’s kind of crazy that no ones done so.
I’m 24 and I get this too! I thought it was due to an from injury years ago but I’ve had countless MRIs and there’s nothing to pinpoint it to! One doctor did say that it could be an anxiety reaction to holding the laugh in and being nervous to be the person to keep on laughing? It happens even when I don’t physically laugh too though!
So this is going to sound slightly redundant, but I have had this condition since early elementary school, from what I can remember. I would get the giggles or just start laughing for a little too long, and then have to write some assignment or other down in class and not be able to. Annoying as it is, for me it only lasted for maybe a minute or two afterwards; then I would be fine. Lately, however, it has been happening more often, sometimes when I'm not even laughing that hard. Today, I got a checkup at the doctor's and asked my doctor about it, to which he replied that he had no idea what it was, possible pinching of the ulnar nerve. I've seen some other pages discussing it, but it seems like nobody has a name for it. The best answer I can think of is - as lisa774 suggested - slight cataplexy, while I do not have the usual narcolepsy or other symptoms. Whatever it is, it isn't serious, but if you have it please don't just read, post! I want to see how widespread this is.
I also have it whenever I laugh I can't even hold a pen properly if I write its as if I'm writing with my left hand and it ain't pretty one day I was taking notes and a kid in my class said something funny ...I started laughing so hard and continued to write but I couldnt..so it's normal for me
I have had this my whole life as well! I thought I was nuts! I'm now 29 and I agree with the last comment, research needs to be done. It's a horrible feeling to not be able to write anything or pick up anything just from laughing!