One of the things my neuro pointed out to my husband during my first exam was my inability to raise the corners of my mouth when I smile. In fact, most of the time my corners point downwards in sort of a constant frown! (Improves noticeably with mestinon.)

'Grooved tongue' was another thing. If you stick out your tongue and you see sort of 'wavy' sides to your tongue...well those are the grooves made by the imprint of your teeth! It's another 'tell' of weak muscle. A 'normal' person's tongue does not need to 'contained or supported' by their teeth!!

These two checks (and many, many others) are a part of my exam every time I have a follow up appointment. All they ask before starting is how much and when did I take my last mestinon!!