A few patients appeared syphilis hard chancre, without painful, without urticant, can natural subsidise, reason often does not grant to treat, incur loss through delay first-rate treats time.

• 有一些患者出现了梅毒硬下疳，无痛，无痒，又能自然消退，故常常不予治疗，延误了最佳的治疗时间。