Blisters on the TB skin test are a strong positive symptom of TB, indicating the presence of TB infection in the body. Tuberculosis skin test is an important means of screening tuberculosis, tuberculosis skin test blisters indicate tuberculosis is strongly positive, the clinical diagnosis of tuberculosis disease has an important reference significance, but can not rely on the tuberculosis skin test blisters diagnosis of tuberculosis, need to be combined with the clinical symptoms or imaging manifestations to make a judgment, it can only show that there is tuberculosis infection in the body of the patient. To see whether the patient has cough, fever, night sweats (abnormal sweating after going to sleep and stop sweating after waking up) and other symptoms, laboratory tests in addition to tuberculosis skin test, you can also choose to test for tuberculosis T-cell infection, and through imaging to screen for the presence of lung lesions. If there is any abnormality in your body, you should go to the hospital in time to do the relevant examination, so as to avoid delaying the treatment of the disease and causing trouble to your health.