MS breathing problems are usually considered secondary symptoms of Multiple Sclerosis, rather than primary ones caused by the disease itself. Multiple Sclerosis breathing problems are more likely to occur as a result of other MS symptoms, such as muscle weakness, or even as a side-effect of some medications, than by the action of MS on the central nervous system. Breathing is controlled by the autonomic nervous system, rather than the central nervous system, so MS breathing problems are not normally a direct result of the disease’s effect on your body. Symptoms of Multiple Sclerosis breathing problemsinclude excessive coughing, mucus build-up, choking at night, difficulty breathing and tightness in the chest. All of these symptoms can be very frightening and upsetting if you don’t know what is causing them, but the good news is that there are lots of simple things you can do to relieve these unpleasant symptoms.