Syphilis is a chronic, systemic sexually transmitted disease caused by the pale (syphilis) spirochete. After suffering and this disease for the human body will cause a lot of harm, once the disease do not delay, must be timely to the regular hospital treatment. Here are 5 hazards of syphilis: 1, harm many organs: spirochete mutation enhanced toxicity, will cause serious damage to body organ damage, not timely treatment leads to loss of organ function, and even endanger life. 2, damage to the skeletal system: damage to the skeletal system is also very harmful, will cause the body tissues, organs are destroyed, resulting in disability or death. 3, harm to the cardiovascular system: harm to the cardiovascular system will cause the body to suffer from diseases such as aortic valve atresia, aortic aneurysm. 4, the treatment of drug resistance: syphilis this disease belongs to the spiral structure variation, the use of antibiotic treatment caused by drug resistance, to the traditional treatment brought difficulties. 5, invasion of the central nervous system: syphilis spirochetes once invaded the central nervous system is more harmful, leading to the development of spinal consumption, paralytic dementia, optic nerve atrophy and other diseases.