(Reuters) – Johnson & Johnson said on Monday that the U.S. Food and Drug Administration approved the company’s blockbuster psoriasis drug, Stelara, for use in adults with Crohn’s disease. The drug is approved in the United States to treat the skin condition scaly plaque psoriasis and a type of arthritis associated with psoriasis. Crohn’s is a chronic inflammatory condition in the gastrointestinal tract, causing abdominal pain, diarrhea, rectal bleeding, weight loss and fever.