Health-Related Quality of Life in Crohn's Disease Participants With Complex Perianal Fistula Before and After Treatment

Inclusion Criteria:

1. Diagnosed with CD and CPF (defined as a fistula meeting any of the following criteria:high location [high intersphincteric, high transsphincteric, extrasphincteric, orsuprasphincteric], multiple external openings, perianal abscess, anal stenosis, orproctitis).
2. Has tried and failed at least one prior treatment for CPF.
3. Starting a new pharmacological or surgical treatment for CPF.

Exclusion Criteria:

1. Diagnosed with indeterminate/unspecified type of inflammatory bowel disease (IBD).
2. Diagnosed with ulcerative colitis.
3. Diagnosed with fistula other than CPF (example rectovaginal).
4. Treated with darvadstrocel or other stem cells-based therapies within the eligibilityperiod.
5. Previous fecal incontinence.
6. Lost to site follow-up for reasons other than death.
7. Participates or plans to participate in any interventional clinical trial.
8. Non fluent in Spanish.