Suggest Treatment For Insomnia , Loss Of Appetite , Anxiety And Headache

My husband has been having strange symptoms for the past year, increasing over the last several months. He saw our family Dr. And had full panel of blood work and was told all is normal. His symptoms are getting worse. Some of his symptoms include: hands trembeling, violent fits of rage, dizzy, insomnia,low sex drive, no appitite, anxiety ,headaches Both arms feel weak, anxious,is there something that it could be? Any direction would be helpful. Thank you