We are presenting a case of Parkinson-ALS-Dementia complex in 53 years old male. Outstanding bulbar signs with muscular atrophy of tongue, muscular atrophy of shoulder girdle together with massive fasciculations (myoclonus type descending from spinal cord) have been observed. Clear Parkinson's syndrome coexisted--bradykinesia, rigidity with cogwheel resistance, "masking" of the face, disturbances of body balance and significant vegetative signs. Moreover psychological testing has shown psycho-organic syndrome of frontal type, MRI scans proved the existence of slight brain general atrophy that is most prominent in frontal et temporal poles. Diseases of this kind occur all over the world sporadically. The case of ALS--dementia complex was observed in our clinic a year ago.