<s>[INST] For a 25 yo male with history of post micturation syncope -- fainted in the theatre bathroom shortly during or after urinating on a full bladder (tried to hold in his urine while watching a movie). What further evaluation will he need? There is no history of other syncopal episodes except in college once due to sleep deprivation involving fraternity hazing. He is otherwise healthy except new onset of feeling intermittent episodes of light headedness and palpitations. He was seen in the emergency room with a normal ekg, normal labs, and an incidental finding of a corpus callosum lipoma which was felt to be a developmental anomalie. [/INST] Hi, Thank you for posting your query. Micturition syncope is fairly common and often not of any serious clinical consequences. For further evaluation in a young person, HUTT (head up tilt test) may be useful. Please consult a cardiac electrophysiologist for the same. Holter test may also be useful. Best wishes, Dr Sudhir Kumar MD DM (Neurology) Senior Consultant Neurologist </s>