Hello Doctor, My brother in law has shivering disease. This is hereditary disease. It looks like familial tremor. My brother in law's father and grandfather has this disease. His grandfather got this dis ease at the age of 60 and died at 75. His father got this tremors at the age of 40 and died at 55. For my brother in law he got this tremors at the age of 28. He has tremors and not able to hold things properly in one attempt. He is mentally okay but feels loosing some balance when walking and when he speak. Looks like he is loosing memory also.