Hi Paul, I'm new here and I do have fasciculations in my calves and other areas, and I do have peripheral neuropathy, I'm 54. I'v only been diagnosed for a few months. I thought I might have ALS for a while and was terrified, so I can imagine your worry. But I've always had the occasional twitch, especially around the eyes, which is an unusual place to have twitches that are associated with anything serious. From my experience the twitching got MUCH worse the more I worried about it. Benign Fasciculation Syndrome is very common. Beware of Dr Google, it can be useful, but some search results can be quite skewed vs the likelihood of the condition.

How old are you? Do you have any other symptoms? Have checked with you doctor?