Table 1.

Classification of Sturge–Weber syndrome

Type	Facial angioma	Leptomenigeal angioma	Glaucoma	Systemic manifestation
Type I	+	+	±	±
Type II	+	−	±	−
Type III	−	+	±	−
Type IV	+	+	±	+

Notes: +, Present; −, absent; ±, feature can be observed but is not ubiquitous.