Crohn’s refers to Crohn’s disease, there is no specific time of recurrence, need to consider the scope of lesions, age and other factors, is not completely fixed. Crohn’s disease is actually a chronic intestinal inflammation, belongs to the autoimmune disease, mostly occurs in the terminal ileum, the right half of the colon, patients will have diarrhea, abdominal pain, as well as fever, nutritional disorders and other manifestations, and is easy to recur. However, there is no clear data on the specific recurrence time, each patient is different, only that if the treatment, proper care, within a few years will not recur, but the specific still need to be combined with the scope of the lesion, age and other factors to determine. Crohn’s disease recurrence first consider the use of ustekinumab and other treatments; if there is an intestinal fistula, intestinal perforation, etc., then need to be surgically removed. Crohn’s disease is long-lasting and prone to recurrence, and it is important to follow your doctor’s instructions for treatment.