Analysis of the clinical course of acute pneumonia in pulmonary tuberculosis patients is presented. The lowest rate of acute pneumonia morbidity was found in patients with active tuberculosis during antituberculosis therapy. As soon as the specific process subsides and its activity diminishes acute pneumonia morbidity grows. Specific features of the course of acute pneumonia in patients with different phases of tuberculosis development are shown. Data on the study of liquid-crystal thermography are presented as well as the assessment of the capillary blood flow and the results of immunologic study in the presence of combined pathology. The terms of alleviation of acute pneumonia in tuberculosis patients are delayed, especially in inflammation development in the zones of post-tuberculosis changes.