Dr. Gerald Wenhaus: Absence of Fever Does Not Rule Out Pneumonia

Dr. Walea Hafez: Some may assume that the symptoms they are experiencing are no more than a common cold, but their health condition can deteriorate suddenly, signaling pneumonia, which can begin with subtle symptoms that are difficult to notice. Many believe that pneumonia is always accompanied by a sharp fever and severe cough from the outset. However, this infection, which claims the lives of approximately 50,000 adults in the United States annually, sometimes presents with less obvious symptoms, making detection and diagnosis more challenging. Dr. Gerald Weinhouse, Clinical Director of Outpatient Services in the Division of Pulmonary and Critical Care Medicine at Mass General Brigham, affiliated with Harvard University, explains that recognizing the early signs of pneumonia helps initiate timely treatment before the condition worsens and the risk of complications increases.

Symptoms of Pneumonia

Pneumonia can result from various infectious agents; common culprits include the bacteria Mycoplasma pneumoniae and Streptococcus pneumoniae, as well as respiratory viruses. This means that the term “pneumonia” encompasses a range of different diseases with varying symptoms. Unlike the milder form known as “walking pneumonia,” “classic” pneumonia often causes sufferers to experience severe fatigue that necessitates bed rest. Symptoms that may appear in people with pneumonia include:

- Cough (whether dry or productive of phlegm)

- Fever and chills

- Chest pain that worsens upon inhalation (taking a deep breath)

- Shortness of breath

- Feelings of tiredness and exhaustion

Cough is the most prominent symptom among these signs. Dr. Weinhouse notes, “Some people may not experience a high fever, but cough is a symptom present in nearly everyone.”

Less Common Symptoms

There are early signs of pneumonia that may be overlooked, including:

- Unusual fatigue

- Shortness of breath disproportionate to the effort exerted

- Mental confusion or sudden changes in mental status, including excessive drowsiness

- Nausea or loss of appetite

- Mild fever, or absence of fever altogether

- Sweating, chills, or a general feeling of being unwell

- Rapid breathing or increased heart rate

Dr. Weinhouse adds, “Severe infection can also lead to low blood pressure, and some types of pneumonia may cause diarrhea. Therefore, symptoms are not always confined to the lungs; fatigue and exhaustion can appear gradually or acutely, even before some respiratory symptoms emerge.”

Infection in Older Adults

Certain groups are more susceptible to more severe cases of pneumonia, particularly older adults, smokers, and individuals with chronic health conditions such as lung disease, heart disease, diabetes, or a weakened immune system. Early symptoms of pneumonia in older adults may manifest as delirium—a sudden state of confusion and loss of balance. The age group of 65 and older is at the highest risk for complications from this infection compared to younger individuals. He also warns that they are more prone to developing “hospital-acquired pneumonia,” a highly serious type. Dr. Weinhouse explains that this is primarily because the patient already suffers from an underlying illness or health weakness prior to contracting pneumonia.

He says, “Pneumonia cases can vary widely from person to person, simply due to individual susceptibility factors, whether related to their immune system, age, pre-existing health conditions, or the type of infection they are exposed to.”

Cases requiring immediate medical care: Dr. Weinhaus clarifies that it is essential not to delay seeking medical care in the following situations:

- A persistent cough lasting more than a few days, with increasing severity.

- Chest pain when breathing.

- Difficulty catching one’s breath.

- Return of symptoms after initial improvement.

Dr. Weinhaus notes that chest X-rays are the primary tool doctors use to diagnose pneumonia, although some early-stage cases may not appear on X-ray images. If X-ray results are inconclusive but doctors still strongly suspect pneumonia, they may request a computed tomography (CT) scan. Dr. Weinhaus adds, “If the patient is frail or has compromised health, we may resort to this procedure to confirm that the condition is indeed pneumonia and not another health issue.”

Pneumonia treatment typically involves the use of antibiotics or antiviral medications, along with adequate rest, fluid intake, and other supportive measures. Dr. Weinhaus emphasizes that older adults and patients whose condition requires hospitalization often need a combination of antibiotics.

Prevention measures: Dr. Gerald Weinhaus has outlined several simple preventive steps that can help protect against infection:

1. Ensure you receive recommended vaccinations; the pneumococcal vaccine can reduce the risk of certain types of pneumonia, although it does not prevent all cases.

2. Wash your hands regularly and thoroughly.

3. Avoid all forms of smoking.

4. Manage chronic health conditions, such as heart disease and diabetes.

5. Seek medical care if respiratory symptoms worsen rather than improve.