Setting Moon or Setting Sun Sign of Intracranial Hypertension

Please click to enlarge.

Note what signs you see.

I (W. Wertelecki, M.D.) see an infant with wide-open eyes exposing the upper rim of the iris. The infant has a facies characteristic of achondroplasia (see webinar on the subject).

PERSPECTIVE: Elevated intracranial pressure in instances of achondroplasia is generally due to stenosis of the foramen magnum. This maldevelopment can be lethal. The large head of such infants must be supported, otherwise when moved the inability of the infant to sustain the posture of the head may result in its overextensions and compress the spinal cord and cause apnea or death. With maturation and growth, such patients may gain greater control of their neck position but nonetheless the associated risk may be diminished but not entirely.


Tags: dxAchondropl