Coarse tremors of tongue is seen in all except:

Answer- C. ThyrotoxicosisTypically the tremor of Parkinson's disease is asymmetrical, at least initially, and affects an upper limb involving the ipsilateral leg after a latency of approximately two years. The disease may also produce tremor of the lips, tongue or jaw but it rarely causes significant head or vocal tremor.Fine tremors- Thyrotoxicosis