Islamic Interpretation of Dreams (Ibn-i Sirin):

(med. Gastrointestinal disease; Inflammation) Suffering from colitis in a dream means feeling malaise, languid or indisposed with one’s own family, children or relations, or it could mean being niggardly toward one’s own family and consequently suffering from a just retribution.

As for a woman, suffering from colitis in a dream means getting pregnant or befriending evil people, or it could mean hearing harsh words.