Crohn's disease and Ulcerative colitis are chronic disease that are usually diagnosed at young age. The diseases and the associated treatment can impact on patient's sexual function, fertility, pregnancy, and delivery. This study aims to assess the impact of inflammatory bowel diseases on these aspects in female patients.

This is a cross-sectional, international, multicentre study. Female patients diagnosed with inflammatory bowel diseases (Crohn's disease and ulcerative colitis) treated at several Italian centres will be retrospectively assessed for inclusion.

Those who underwent surgery below the age of 35 years between 2000 and 2020 will be included. The study aims to obtain information on female fertility, pregnancy and delivery, and to identify factors associated with infertility and problems to conclude the pregnancy.

For each nation, at least one centre will collect data on patients who were not treated with surgery.

Patients who meet inclusion criteria will be asked to prospectively fill a questionnaire on fertility and pregnancy.

Data on treatments and demographic will be retrospectively collected by the local investigators and uploaded on a secure online database.

Inclusion Criteria:

• Crohn's disease diagnosis
• ulcerative disease diagnosis
• operated on before 36 years of age

Exclusion Criteria:

• younger than 18 years old at follow-up
• no definitive diagnosis
• no surgical procedures performed

A subgroup of patients who did not undergo surgery will be used, at least one for each country.

All female patients will be included

Female patients diagnosed with Crohn's disease or ulcerative colitis, treated when 35-year-old or younger.