1 Department of Pediatrics, Ross-Loos Medical Group, 947 West 8th Street, Los Angeles, California 90017
2 Professor of Pediatrics Chief, Renal Electrolyte Division, University of California, San Francisco, California 94122
With regard to the article1 by Drs. Maltz, Fish, and Holliday in the December, 1970, issue, it seems to me that a child who keeps having severe diarrhea on regular feedings and improves on a milk substitute diet is probably suffering from cow's milk allergy. The fact that the patient tolerated cow's milk at 13 months of age does not rule this out. I would also like to point out that all the clinical, laboratory, and x-ray findings described by the authors are those of Vitamin D deficiency rickets.