Recurrent tuberculosis is generally defined as tuberculosis that has failed the original treatment or is caused by irregular medication, and the course of treatment for recurrent tuberculosis generally takes at least one year, and even some 1.5-2 years if drug resistance is considered. It is best for TB to be cured on the first treatment, if it comes back with a second or third treatment, it often takes longer and costs more money. This is because it is necessary to use second- or even third-line drugs for anti-TB treatment, which are more expensive and more likely to cause damage to liver and kidney function and the blood system. When TB is retreated, you need to reapply drugs for anti-TB treatment, such as a combination of rifampicin, pyrazinamide, isoniazid, etc., and pay attention to observing changes in your condition, with regular reviews in a month or so, and regular follow-ups.