What is A baby presents with diarrhea and perianal diaper area redness. Diagnosis is and explain in detail?
In Lactose intolerance, there is a deficiency of the enzyme lactaseSo there is no natural breakdown of lactose - a carbohydrate present in milkThis causes diarrheaThe stool contains reducing sugar which causes perianal excoriation(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 1876)