What Causes Tremors, Shooting Electric Pain, Leg Cramps And Sleeplessness?

Hello I am a 45 year old female in pretty good shape except for sleep issues all my life and now Tremors, stabbing electric like shooting pains all over at random times...I get cramps on my legs that hurt, now my eyesight is going and I mean going I had several tests but all has come back normal...I do not suffer from depression nor anxiety...I find that now i am just annoyed at not finding out what the cause is...I still get menses and as for hot and cold flashes I had them since I was a teen...They have increased though...What can this be?Am also in middle of sleep test for Narcolepsy and Cataplexy, sleep paralysis etc...