“…However, the drugs used by the patients with PD were not reported by Alici et al 1 Therefore, it would be useful to specify which drugs were used because some drugs like antidepressants and b-blockers may affect the circadian variation in BP measurements and autonomic system. 4,5 Furthermore, although some drugs, especially antidepressants, are generally safe medication, cardiac events, including ventricular arrhythmias, have been reported in some studies. 6 In conclusion, the drugs used by the patients with PD may affect the circadian variation in BP measurements and autonomic system.…”