Croupous pneumonia, also known as lobar pneumonia, is a severe respiratory infection that affects the lungs and causes inflammation of lung tissues. This condition is characterized by the formation of exudates in the alveoli, which leads to consolidation of lung tissue. Some synonyms for croupous pneumonia include lobar pneumonia, fibrinous pneumonia, and pneumococcal pneumonia. Lobar pneumonia is usually caused by bacterial infection, such as Streptococcus pneumoniae, and is a serious condition that requires immediate medical attention. Symptoms of croupous pneumonia include fever, coughing, chest pain, difficulty breathing, and fatigue. Treatment for croupous pneumonia involves the use of antibiotics and supportive care, including rest, fluids, and pain relief.