<unk>  is a described clinical entity comprising a complex of clinical features caused mainly by dysregulation of the blood supply. It was previously known as vascular dysregulation. It can manifest in many symptoms, such as cold hands and feet, and is often associated with low blood pressure. In certain cases it is associated with or predisposes to the development of diseases such as a normal tension glaucoma.<unk>  is named after the Swiss ophthalmologist Josef<unk> .
Flammer syndrome
Fryns-Aftimos syndrome
Bogart–Bacall syndrome
Teunissen–Cremers syndrome
Char syndrome
Helsmoortel-Van der Aa syndrome
Jeavons syndrome
Keutel syndrome