And treatment is important, because symptoms can cause more serious problems if they get worse.

We don't know what symptoms the disease might have caused at that time.

Sometimes, the first symptoms occur in the eyes and cause double vision.

These symptoms may cause severe problems with work or social functioning.

The new symptoms cause further anxiety, and the cycle continues.

Symptoms may cause an increased need to urinate during the night.

These symptoms cause the patient to have difficulties with seeing and processing images.

These symptoms were typically apparent throughout the community and caused an internal disease process.

These symptoms may cause only minor problems at work or while spending time with friends or family.

These symptoms may cause absences from school or poor school performance.