A member asked:

Why is there an edema in kwashiorkor but not in merasmus?

A doctor has provided 1 answer
Dr. Cayce Jehaimi answered

Specializes in Pediatric Endocrinology

Protein vs calories: in Kwash, there is significant deficiency in protein intake which in turn leads to drop in the oncotic pressure inside the blood vessels, causing leakage of fluids to the third spaces hence the edema. In merasmus, there is calorie deficit in general but still enough protein intake to maintain normal oncotic pressure.

Answered 9/11/2015

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