Arthritis Crossword

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Across
  1. 5. Its not curable but there are ... to help symptoms.
  2. 6. Where does arthritis normally affect?
  3. 7. What is one main cause of arthritis?
Down
  1. 1. What is the disease's name?
  2. 2. What age group is normally affected?
  3. 3. What system does it affect?
  4. 4. This disease is not curable there for it is...