What Causes Muscles Spasms In The Body After Masturbation?

Hello, I’m 37 years old man and single located in Iran. After masturbation, I fill spasm in my body. This spasm is mostly in my legs and chest and spinal cord. Due to spasm in my legs I can’t walk normally. These are my disease symptoms: Feeling of pressure in the head, sever shake in the hands, frequent urination, difficulty in breathing, suffocation, anxiety. Until now I’ve gone to many doctors. I’ve been doing a lot of lab and radiology and MRI or EEG, but all of them were normal and nothing abnormal is seen. So far no doctor could cure my disease but some doctors say my illness is mental not physical. Also I have gone to many psychiatrists and used many drugs but none could treat me. Do I have undiagnosed illness? Should all my life living with this disease? Please inform me. I’m ready to send you the lab and radiography and MRI results. Best regards, Saeed