Familial orthostatic tremor and essential tremor in two young brothers: A rare entity
A young boy aged 12 years attended the outpatient department of tertiary care medical college hospital with the complaint of tremulousness in the legs on standing but the problem resolved on walking or on lying down. History of similar illness was seen in his younger brother but not in his parents. He further complained that his hands shake while lifting a glass of water for drinking and the tremor increased as the hand was taken closer to the lips.\nOn examination, we observed that the child had been quivering in the lower limbs while standing and it was also present in the upper limb to some extent. Fine ripples of movements were observed in the thigh and the calf muscles. The movements disappeared when he was asked to walk, sit, or lie down, but reappeared when asked to put the lower limbs in the state of isometric contraction while lying down. The outstretched hands showed fine tremor which increased during finger - nose test. The boy suffered from acute anterior poliomyelitis in childhood with wasting of the muscles of the right lower limb and there was scoliosis to the right as a compensatory mechanism.