Fig. 1From: Familial occipital and nervus intermedius neuralgia in a Swiss familyPedigree of a Swiss family with cranial neuralgia (vertical lines), somnambulism (grey background) and migraine (horizontal lines). One or more of these conditions are overlaid on circles (females, F) and squares (males, M). F1947 means: female, born in 1947. Clinical details are given in the textBack to article page