Last June, Dennis Nelson started experiencing symptoms he thought were related to allergies.
The 54-year-old Roy resident went hiking and couldn't seem to get enough air. His doctor said he had some sinus issues and prescribed some medicine that seemed to take care of the problem.
"Then soon after, I started getting some migratory joint pain, but it only lasted about a week, so I didn't think much of it," Nelson said. "In October, the joint pain came back.