Fig. 1From: Nummular headache associated to arachnoid cystsCase 1: Patient points to a localized painful area in the right parietal region of her head (a). MRI of the head shows ipsilateral arachnoid cysts in posterior cerebral convexity (b). Case 2: Shadowed area marks the painful area on right temporal head (c), overlying a right temporal arachnoid cysts on MRI imaging (d)Back to article page