hypothyroidism, rickets, or hydrocephalus Increased intracranial pressure from infection or hemorrhage produces a full or bulging fontanelle, whereas dehydration produces a depressed fontanelle A fontanelle that appears full while the infant is supine or crying should be reassessed while the infant is held upright and sleeping or feeding before it is determined to be full or bulging FIGURE 96.16 Caput succedaneum in a newborn infant Large soft swelling over the vertex, not confined to suture lines (Courtesy of the late Peter Sol In: Chung EK, Atkinson-McEvoy LR, Boom JA, et al., eds Visual Diagnosis and Treatment in Pediatrics 2nd ed Philadelphia, PA: Lippincott Williams & Wilkins; 2010 With permission.)