Cutis marmorata telangiectatica congenita (CMTC) is a congenital localized or generalized vascular anomaly characterized by a persistent cutis marmorata pattern with a marbled bluish to deep purple appearance, spider nevus-like telangiectasia, phlebectasia and, occasionally, ulceration and atrophy of the affected skin.

Hydrocephalus is an active distension of the ventricular system of the brain resulting from inadequate passage of CSF from its point of production within the cerebral ventricles to its point of absorption into the systemic circulation.