What Causes Muscle Spasms In The Feet And Hands?

I have a disease process that has diagnosis of some areas but there is one underlying disease. Symptoms include laryngeal dystonia that cuts off airway, Restrictive Interstitial Lung Disease, Muscle spasms on feet, legs, hands, intercostals, upper abdomen. Doctos say 10th crainial nerve is ditected but because there is no muscle weakness (except for poor coordination in my hands that used to be very good, My balance is poor. I have been tested for everything. I have abnormal ANA, elevated creatine kinase (300 range). Twisting and turning causes the intercostal muscle spasms.