Introduction: peritoneal tuberculosis, commonly abbreviated as TB, represents one of the most complex and challenging modalities to identify within the various forms of tuberculosis occurring outside the lungs, known as extrapulmonary tuberculosis. The difficulty presented by this challenge may be most significant in those areas where the incidence of the disease is low, as well as in patients suffering from cirrhosis, in whom the mere presence of ascites may not be sufficient to warrant further investigation of their health status. Significant delay in the identification and appropriate treatment of peritoneal tuberculosis can lead to a number of adverse consequences resulting in worse clinical outcomes for the affected patient. The aim of the present study is to learn about the clinical presentation of this pathology. Case Report: a 38-year-old male patient presents with holocranial headache accompanied by unquantified thermal elevations of 24 hours of evolution, 3 hours ago the symptomatology is exacerbated and accompanied by diffuse abdominal pain of great intensity, reason for which he goes to the doctor. Conclusion: the diagnostic process for peritoneal tuberculosis can be complicated and challenging, and this is due to a series of factors such as the presence of non-specific symptoms, the fact that the onset of the disease is usually insidious and gradual, as well as the variability in the findings that can be observed in the imaging tests performed.