Tuberous Sclrosis is a rare hereditary disease first described by Bourneville in 1880, and usually transmitted as autosomal dominant trait, and is characterized by mental retardation, seizares, and adenoma sebaceum. This 21 year old male patient visited for multiple pin head to pea siaed yelhwish red waxy papules on the face and gingival papillema af 10 years dunatio. Attacks of grandmal seisure eccr oacurred times in the past 8 yeara. Past hiatory and family history were noncountributory. There was a shagreen patch on left lower lumbo-sacral area. Hiatopathology disclosed an adenoma sebaceum showing dilatation of the capillaries, proliferation of collagen, mild cellular infiltration of papillary dermis and perivascular areas. EEG revealed asymmetrieal slow waves on right side of the brain, predommantly in anterior part, and intermittent sharp waves on right anterior frontotemporal area of the brain.