Symptoms of pneumonia include fever, muscle aches, chest pain, sore throat and fatigue, explains WebMD. Patients may also experience shortness of breath, coughing with small amounts of mucus and swelling of the lymph nodes in the neck. Due to congestion in their lungs, patients with congestive heart failure may experience trouble breathing at rest, shortness of breath during exercise, wheezing or dry coughing. Fluid retention, fatigue, weakness, dizziness and irregular heartbeats are other heart failure symptoms.
Pneumonia symptoms are similar in patients with both viral and bacterial infections, but the symptoms of bacterial pneumonia tend to appear sooner and be more noticeable, according to WebMD. Viral pneumonia symptoms typically take longer to develop and are less severe. Doctors describe cases with especially mild symptoms as walking pneumonia. The infection may manifest differently in older adults, with cognitive symptoms such as confusion or delirium being common. Certain conditions make individuals more susceptible to developing pneumonia, including colds, the flu, diabetes, heart disease and cancer.
Signs of fluid retention due to heart failure include swelling in the legs, ankles or stomach; increased urination; and weight gain, notes WebMD. Dizziness and confusion result from inadequate amounts of blood reaching the brain, while fatigue is the result of too little blood circulating to the muscles and major organs. Symptoms range in severity from mild to severe, with some heart failure patients not experiencing any symptoms.