Abdominal cocoon is characterized by small bowel encapsulation by a fibro–collagenous membrane. It is a rare cause of chronic abdomen. A 18 year female presented with intermittent pain abdomen of one year duration. Intra–operatively, the entire small bowel was found to be encapsulated in a dense fibrous sac. The peritoneal sac was excised, followed by lysis of the inter–loop adhesions. Post operative recovery was unremarkable. Most abdominal cocoon patients present with features of recurrent acute or chronic small bowel obstruction secondary to kinking and/or compression of the intestines within the constricting cocoon. The diagnosis requires a high index of suspicion because of non specific clinical picture. Peritoneal sac excision and adhesiolysis is the treatment and the outcome is usually satisfactory.