Pneumonia: Types, Causes, and Effective Home Remedies

A lung infection called pneumonia can range in severity from being minor to necessitating hospitalization. It takes place when an infection causes the alveoli, or lung air sacs, to swell up with fluid or pus. As a result, you may find it challenging to breathe in adequate oxygen for your bloodstream.

This lung infection can affect anyone. However, those under two years old and those over 65 have a larger risk. That’s because their immune systems might not be capable of defending themselves. Pneumonia may develop in either one lung or both lungs. “Walking pneumonia” is the term used by doctors. Bacteria, viruses, and fungi are some of the causes. In addition, you can spread pneumonia to another person. Excessive drinking and smoking are lifestyle factors that can heighten the risk of pneumonia.

Bacterial Pneumonia Vs. Viral Pneumonia

Pneumonia is an inflammation caused by a lung infection, and the symptoms can differ based on whether it’s triggered by a virus, bacteria, or a fungus.

Viral pneumonia is less prevalent and usually not as severe as bacterial pneumonia. Providers use antibiotics to treat bacterial pneumonia. Symptoms are more familiar with viral pneumonia, likely to go away independently.

Types

Doctors classify pneumonia based on where you got the infection and what type of germ caused it.

Community-Acquired Pneumonia (CAP)

This is the most common type. You get it during normal daily life, outside hospitals or clinics.

It can be caused by:

• Bacteria (a common cause in adults)
• Viruses like the flu or COVID-19
• Fungi (rare, mostly in people with weak immunity)

Some cases are mild, such as “walking pneumonia,” while others can be serious.

Hospital-Acquired Pneumonia (HAP)

This type develops during a hospital stay for another illness or surgery. It can be more serious because the germs may resist common medicines. People who are already sick have a higher risk.

Healthcare-Associated Pneumonia (HCAP)

This occurs in people who receive long-term medical care, such as in nursing homes or dialysis centers. Like hospital-acquired pneumonia, it may involve harder-to-treat bacteria.

Ventilator-Associated Pneumonia (VAP)

This type affects people who use a breathing machine (ventilator) in the hospital. Germs can travel down the breathing tube into the lungs and lead to an infection.

Aspiration Pneumonia

This happens when food, liquid, saliva, or vomit goes into the lungs by mistake. It is more common in people who have trouble swallowing or are unconscious.

Symptoms

Pneumonia symptoms can range from mild to severe. Some people feel only slightly unwell, while others become very sick. The signs of illness can change based on age, overall health, and whether bacteria or a virus is responsible for the infection.

Symptoms of Bacterial Pneumonia

Bacterial pneumonia can start suddenly or develop slowly. Symptoms may include:

• High fever
• Severe chills
• Cough with thick yellow, green, red, or bloody mucus
• Fast breathing and shortness of breath
• Rapid heartbeat
• Chest or stomach pain, especially while coughing
• Heavy sweating
• Loss of appetite
• Bluish lips, nails, or skin due to low oxygen
• Confusion, especially in older adults

Symptoms of Viral Pneumonia

Viral pneumonia usually develops over a few days. Early symptoms may feel like the flu. These include:

• Dry cough
• Fever
• Headache
• Muscle pain
• Extreme tiredness or weakness

Common Symptoms in Adults

Most adults with pneumonia may notice:

• Cough, which may bring up yellow, green, or bloody mucus
• Fever and chills
• Sweating
• Shortness of breath
• Fast breathing
• Chest pain that gets worse while coughing or taking a deep breath
• Tiredness and low energy
• Loss of appetite
• Nausea or vomiting
• Headache

Symptoms in Infants and Young Children

Babies and small children may show different signs. Sometimes symptoms are not very clear. Watch for:

• Fever or chills
• Cough
• Fast or difficult breathing
• Noisy breathing or grunting sounds
• Vomiting
• Poor feeding or trouble drinking milk
• Fewer wet diapers than usual
• Lack of energy or unusual sleepiness
• Restlessness or more crying than usual
• Pale or bluish skin

Symptoms in Older Adults

Older adults may have milder or unusual symptoms. They may have:

• Mild cough or no cough
• Low body temperature instead of fever
• Sudden confusion or changes in mental state
• Extreme tiredness
• Loss of appetite
• Worsening of existing health problems

As the illness worsens, breathing may become more difficult, and cough may increase.

Causes

Pneumonia happens when germs infect the air sacs in the lungs. These sacs fill with fluid, which makes breathing hard.

The main causes are:

Bacteria

Bacteria are a common cause, especially in adults. Pneumonia may start after a cold or flu. Some bacteria can cause mild illness, while others can cause serious infection.

Viruses

Viruses often cause pneumonia in children but can affect adults too. Flu viruses, cold viruses, and COVID-19 can lead to pneumonia. Viral pneumonia can sometimes turn into bacterial pneumonia.

Fungi

Fungal pneumonia is rare. It usually affects people with weak immune systems. It can happen after breathing in fungi from soil or bird droppings.

Other Causes

Pneumonia can also develop if food, drink, or vomit accidentally enters the lungs. This is called aspiration pneumonia.

Germs usually spread through the air when an infected person coughs or sneezes. People with weak immunity, older adults, and young children have a higher risk.

Diagnosis

To diagnose pneumonia, a healthcare provider will review your medical history and conduct a physical examination. Then, they’ll use a stethoscope to listen to your lungs and perform or prescribe another test. These consist of imaging (such as X-rays of the chest), pulse oximetry (measuring the amount of oxygen in your blood), blood testing, or sputum (spit) studies.

Your doctor may not always be able to determine the precise cause of pneumonia, even after confirming that you have it.

Treatment

Treatment for pneumonia is decided by what caused the infection and how severe the condition has become. Some people recover at home, while others need hospital care.

Medicines

Doctors choose medicines based on the type of germ causing pneumonia.

• Antibiotics treat bacterial pneumonia. It is important to take the full course, even if you feel better.
• Antiviral medicines may be used for some viral infections, such as the flu.
• Antifungal medicines treat pneumonia caused by fungi.
• Fever and pain relievers can reduce fever, chest pain, and body aches.
• Cough medicines may help you rest, but coughing should not be stopped completely because it helps clear mucus from the lungs.

Supportive Care at Home

Many people with mild pneumonia can recover at home with proper care.

• Get plenty of rest
• Drink lots of fluids to prevent dehydration and loosen mucus
• Eat light, healthy meals to keep up your strength
• Use a humidifier or take warm showers to ease breathing
• Avoid smoking and stay away from smoke

Hospital Treatment

You may need hospital care if symptoms are severe or if you are at high risk. In the hospital, doctors may provide:

• Oxygen therapy to help with breathing
• IV fluids to prevent dehydration
• IV antibiotics for serious bacterial infections
• Breathing support using special machines if needed

When Does a Cough Become Pneumonia?

You’ve been coughing for a long time, but it seems like your cough is growing worse rather than better. You can even cough up phlegm or experience chest pain when you cough. Those are indications that pneumonia may be the cause of your cough.

Pneumonia is a lung illness that can vary from mild to serious, where the tiny air sacs become filled with fluid or pus.

Knowing the signs of pneumonia and when to visit the doctor can ease your mind, whether you’ve had your cough for three days or three weeks.

Is Pneumonia Contagious?

Although pneumonia is not contagious, the viruses and bacteria that cause it are. For instance, the flu can cause pneumonia and is contagious, although the majority of the people who contract the flu do not develop pneumonia.

Streptococcus pneumonia, the bacterium that most frequently causes pneumonia, can be transferred from one person to another by touching contaminated surfaces or coughing and sneezing.

Fungus-caused pneumonia is not contagious. Like viruses and bacteria, fungi do not transfer from person to person.

Why Would You Need to See a Pulmonologist?

Your normal doctor may recommend seeing a pulmonologist if you have symptoms they can’t treat or believe you might benefit from seeing a specialist. These can be a few of the warning signs and symptoms:

• A cough that doesn’t get better with time (chronic cough)
• Difficulty breathing (dyspnea)
• chest discomfort or stiffness
• Wheezing
• Sleep apnea symptoms may involve heavy snoring or extreme tiredness
• Dizziness

If you already have a respiratory condition, continuing with your regular checkups can help you manage your health effectively.

Prevention

You can lower your risk of pneumonia by following healthy daily habits.

• Boost your immunity: Eat healthy food, sleep well, stay active, and manage stress.
• Avoid sick people: Stay away from those with cough, cold, or flu. Rest at home if you feel unwell.
• Wash your hands: Clean hands often with soap or use hand sanitizer to stop the spread of germs.
• Avoid smoke: Do not smoke and stay away from secondhand smoke. Smoke weakens the lungs.
• Manage health conditions: Regular checkups help control problems like asthma, diabetes, and heart disease.
• Breathe clean air: Avoid polluted areas when possible and keep indoor air clean.

Simple healthy habits can greatly reduce your chances of getting pneumonia.

Complications

Pneumonia can sometimes cause serious problems, especially in older adults, babies, and people with weak immunity or long-term illnesses.

• Breathing failure: Severe infection can make it hard for the lungs to supply enough oxygen. Some people may need a breathing machine.
• Sepsis: The infection can spread to the blood and affect the whole body. This can damage organs and become life-threatening.
• Fluid around the lungs: Fluid can collect between the lungs and chest wall, making breathing painful and difficult. Doctors may need to drain it.
• Lung abscess: Pus-filled pockets can form inside the lungs. These need strong antibiotics or other treatment.
• ARDS (severe lung injury): The lungs can become badly inflamed and filled with fluid, which blocks oxygen from reaching the blood.

Early treatment and medical care can help prevent these complications.

Frequently Asked Questions