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How comorbid conditions affect the choice of treatment in multiple sclerosis

A person can have more than one medical illness at the same time. For instance, a person could have headaches and also have low thyroid. In some cases, the medical illnesses are unrelated. In other instances, the comorbid illnesses occur together more often than by chance alone. In medicine, comorbid illnesses are very common. Many prior Patient Pages have discussed some of these associations. For people with multiple sclerosis (MS), having a comorbid medical condition is common. In some studies, 40%–66% of people with MS will also have another, associated, medical condition.