Less Common Symptoms
Speech problems, including slurring (dysarthria) and loss of volume (dysphonia) occur in approximately 25-40% of people with MS, particularly later in the disease course and during periods of extreme fatigue. Stuttering is occasionally reported as well.
Swallowing problems — referred to as dysphagia — result from damage to the nerves controlling the many small muscles in the mouth and throat.
Tremor, or uncontrollable shaking, can occur in various parts of the body because of damaged areas along the complex nerve pathways that are responsible for coordination of movements.
Seizures — which are the result of abnormal electrical discharges in an injured or scarred area of the brain — have been estimated to occur in 2-5% people with MS, compared to the estimated 3% of the general population.
Respiration problems occur in people whose chest muscles have been severely weakened by damage to the nerves that control those muscles.
Pruritis (itching) is one of the family of abnormal sensations — such as "pins and needles" and burning, stabbing or tearing pains — which may be experienced by people with MS.
Although headache is not a common symptom of MS, some reports suggest that people with MS have an increased incidence of certain types of headache.
About 6% of people who have MS complain of impaired hearing. In very rare cases, hearing loss has been reported as the first symptom of the disease.