Medical MCQ-A two year old child presents with persistent diarrhaea acidic stools and presence of one per cent of reducing substance in the fresh stools. What is the most probable diagnosis ?

A two year old child presents with persistent diarrhaea acidic stools and presence of one per cent of reducing substance in the fresh stools. What is the most probable diagnosis ?

Cystic fibrosis

Lactose intolerance

Rotavirus induced diarrhoea

Intestinal tuberculosis

Question Category:

Pediatrics

Correct Answer:

Lactose intolerance

Description:

DISACCHARIDASES DEFECIENCY Lactase defeciency diagnosis based on presence of more than .5%of reducing substance in the fresh stools acidic stools abnormal oral sugar tolerance test breath Hydrogen excretion of more than 11ppm following a loading dose of lactose enzyme assay on mucosal biopsies showing low levels of disaccharidases Ref : ESSENTIAL PEDIATRICS,O.P.GHAI,PG NO:274, 7th edition

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