I've been experiencing month long eyelid twitching since this started in 2004. When I had my EMG, I mentioned it to my neurologist and he said that eyelid twitching is rarely ever pathologic. Now, fast forward to 2011. I've had them in both my top and bottom eyelids, both sides. In fact, as I type this my upper right eyelid is twitching. It has been doing it more days than not since April 2010. This past July my upper left joined in and does it, too more days than not. My only relief comes from visits to receive Botox injections. I've been doing it for the lower lids and will be doing it in a week or so for the upper (have to be more careful with those because of the potential for ptosis).So, do not worry about any correlation between eyelid twitching and ALS, it simply is not a symptom. Annoying as hell, that is for sure.