idiopathic hypercalcemia of infants

n.
  1. Persistent hypercalcemia of unknown cause occurring in very young children and associated with osteosclerosis, renal insufficiency, and sometimes hypertension.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.