Below shown finding is characteristic of?
Image shows Naevus flammeus or  port wine stain, which is characteristic of sturge weber syndrone.
Other imporant finding in this syndrome are :
Seizures, Mental retardation, Ipsilateral leptomeningeal angioma.
Von Recklinghausen disease
Bournvilles disease
Von Hipple Lindau disease
Sturge Weber syndrome