Hello, thanks for your posts. I do get it also occasionally, in the corner of my mouth, half of tongue, eye twiching, sometimes I get muscle twiches but not so often and tingling/vibrating. Very annoying. I noticed that not in pregnancy there are for example 4 days OK, without these sensation or very little of these sensations are present, then they are two days or just a day when it is a little bit worse. So in general it is a little bit better, than before pregnancy, because before it was everyday the same. I had emg, mr of the head and neck, b12 is ok, thyroid ok. What else can I do before skin biopsy?