When I was 6 I kept telling my parents my legs hurt. They thought I was making it up, but then I got really sick. I had rheumatic fever.
After a month in the hospital, I couldn't walk anymore and my legs still hurt badly. They realized then I also had bacterial meningitis. I could no longer move my legs and they started putting me in hot baths and laying me on a table and moving my legs for me. Another 6 weeks in hospital and got to go home.
That was 56 years ago.. I still cannot straighten my legs and they still hurt to this day...when I was 1 year later, tonsils out. When 16 had my thyroid removed.