To the Editor: Parkinson’s disease (PD) is a common neurological disorder without absolute treatment. The patients would need to ask a physician for a treatment usually after 50 to 80% destruction in Substantia Nigra pars compacta (SNc).1 Therefore, the process of SNc destruction is started several years before the diagnosis of PD by the physician. Diagnosis time plays a key role in controlling the PD and postponing the disabling stages of the disease. Therefore, the disease should be diagnosed as soon as possible. Since the disease has definite motor symptoms, it seems that considering these symptoms may help to separate the at risk persons. One of the most important motor symptoms is gait disorder which is the result of rigidity, bradykinesia, postural imbalance, etc. Therefore, it seems that designating a simple walking test in general check-up tests may be helpful in early diagnosis of PD.