Ulcerative colitis.

  title={Ulcerative colitis.},
  author={Silvio Danese and Claudio Fiocchi},
  journal={The New England journal of medicine},
  volume={365 18},
 Is medical clearance required? .................................. Possibly (e.g., if the disease is unstable — flare-up — and/or there are active oral lesions). Also, medical clearance may be required if patient/client is being treated with medications associated with immunosuppression +/increased risk of infection (e.g., corticosteroids [e.g., prednisone], azathioprine, 6-mercaptopurine, methotrexate, cyclosporine, sulfasalazine, biologic response modifier drugs [e.g., anti-tumour necrosis… 

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