It sounds like you are suffering from stiff person syndrome more common in females could be caused by several causes triggered by severe emotional stress vitamin B12 deficiencies autoimmune where anti bodies against nerve protein Amphiphysin formed or neural chemical Glutamic acid decarboxylase deficiency it could be feature of lung or breast cancers muscular tetany or epilepsy or focal seizures it is good to see your doctor to get investigated muscle relaxants like baclofen vitamin B12 and Bcomplex calcium and Vitamin D anti epileptic medicines gabapentine or IV immunoglobulins or immune modulating drugs all are helpful and should be prescribed by your doctor based on the cause of your symptoms. psychosocial support and counseling would be helpful wish you good luck.