Liver cirrhosis and its complications constitute one of the most important causes of hospitalization in internal medicine departments. Liver cirrhosis is not a homogeneous disease entity, but is the final stage of many different liver diseases, and the most important causes leading to the development of liver cirrhosis are alcoholic liver disease and viral hepatitis. One of the typical complications of liver cirrhosis are symptoms of bleeding diathesis. The most common bleeding complication in patients with liver cirrhosis is bleeding from the upper gastrointestinal tract. The aim of this publication is to present a case report of a 32-year-old man in the terminal stage, hospitalized due to decompensated alcoholic cirrhosis of the liver, who during hospitalization developed a spontaneous large hematoma in the rectus abdominis muscle on the left side. The presented case report shows that in the care of patients with decompensated liver cirrhosis, vigilance must be maintained to recognize bleeding complications, including those with an atypical clinical course.