Episodic unilateral mydriasis in otherwise normal patients.
D000293:Adolescent; D000328:Adult; D004106:Dilatation; D005128:Eye Diseases; D005260:Female; D007839:Functional Laterality; D006261:Headache; D006801:Humans; D008297:Male; D010507:Periodicity; D011680:Pupil; D014786:Vision Disorders