A 4-month course of medication for TB will not achieve a course of treatment and will not cure it. The standard course of treatment for a first-time TB infection is usually 6 months, and taking medicine for only 4 months will not cure it. If the medicine is stopped at this time, the TB lesions in the lungs are not cured, and even if the lesions get better, they are very likely to come back. For some recurrent TB infections and drug-resistant TB infections, the treatment period is even longer, and some infected people even need to be treated for 2 years. Therefore, only 4 months of treatment is absolutely not enough, and you should continue to take the medication. The length of the treatment cycle of tuberculosis is related to whether the infected tuberculosis bacillus is drug-resistant or not, the location of the infection, and whether it is the first time to be treated or not, so you should cooperate with specialists and insist on completing the whole treatment cycle in order to achieve the goal of curing the disease.