The Inflammatory Bowel Disease (IBD) are chronic pathologies that affect either adults and children, included Crohn's Disease (CD) and Ulcerative Colitis (UC). In the last 10 years, it was observed an increasing of this disease in the pediatric age. The complications that may cause are multiple, and it is important to recognize them because they change the prognostic and treatment possibilities either medical or surgical, limiting the therapeutic arsenal progressively. The aim of this review was to describe the complications of IBD en the pediatric age. We can distinguish intestinal and extraintestinal complications. The first are in general disease specific, for example, the fistulas with CD, and toxic megacolon with CU. The extraintestinal complications occurs in both disease, including: anemia, growth failure, osteoporosis and cancer. The early diagnosis and timely treatment are necessary in these complications, because of the impact in de quality of life of the pediatric and adolescent patient. To recognize them depend directly of the clinician experience and the knowledge of the pathologies, then it is important review these themes constantly.

Key words : Inflammatory bowel disease, , Crohn´s disease, Ulcerative Colitis.

Abbreviations : Inflammatory bowel disease = (IBD), Crohn´s disease = (CD), Ulcerative Colitis = (CU).

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