Whether tertiary syphilis can be completely cured depends on the specific conditions of different patients. If tertiary syphilis has not caused serious complications, then timely and standard syphilis treatment at this stage can potentially lead to a cure. However, if it has been a long time and the condition has been neglected, it might cause severe damage to tissue and organ functions and can be life-threatening. At this point, it cannot be completely cured; even using anti-inflammatory drugs to treat syphilis cannot reverse the complications and greatly affects the quality of life.