Tremors occur in most of the cases but not in all. Rigidity, slowness and difficulty in walking are the cardinal signs of Parkinson's.
There are few rapidly progressive variants of Parkinson disease which don't come under idiopathic Parkinson's disease. For the same, an extensive search for secondary causes of Parkinson's is required
Next Steps
Parkinson's being a clinical diagnosis , requires detailed physical examination by a trained neurologist
Health Tips
Beleive on your treating Neurologist & discuss the issues with him. if in doubt, u can send the prescription over to me for second opinion.