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Pneumonia Causes Diagnosis and Treatment

Causes, Symptoms, Diagnosis, and Treatment of Pneumonia

Inflammation of the terminal airways, alveoli, and interstitial lungs is referred to as pneumonia. Drugs, immune system damage, physical and chemical causes, allergies, and disease-causing bacteria can all contribute to it. The most prevalent type of pneumonia and one of the most prevalent infectious diseases is bacterial pneumonia.

The pneumonia that is commonly referenced in daily life is pneumonia brought on by bacterial illnesses. The most typical pneumonia is this one. Bacterial pneumonia posed a serious threat to the health of children and the elderly prior to the development of antibiotics. Once upon a time, the invention and development of antibiotics Although the death rate of pneumonia has greatly dropped over the years, despite the use of potent antibiotics and successful vaccines, the overall mortality rate of pneumonia has recently stopped decreasing and has even started to climb.

Symptomless pneumonia in older people is common.

The disease progresses quickly, the symptoms are frequently unusual, and it is simple to miss a diagnosis or make one that is incorrect. Lethargy, thirst, loss of appetite, shortness of breath and dyspnea, or conscious disturbance, are the first signs.

Name in English: Pneumonia

Respiratory department visited

Lung illness is widespread

Expert analysis: Recognizing germs and "seeing clearly" pneumonia


The leading cause of death in children and the elderly is "pneumonia," which is also the most prevalent infectious disease in young and middle-aged persons.

Table of Content

    1. Causes

    2. Clinical Manifestations

    3. Inspection

    4. Diagnosis

    5. Treatment

General Information

What are the Typical Pneumonia Causes?

Escherichia coli, Klebsiella, Pseudomonas aeruginosa, influenza, and other gram-negative bacteria. organisms such as bacteria, viruses, fungus, and both aerobic and anaerobic bacteria.

What are the Common Symptoms of Pneumonia?

    Shortness of breath, dyspnea, lethargy, dehydration, decreased appetite; pulse rate, wet snoring, accompanied by diminished breathing sounds and bronchoalveolar breathing sounds, etc.

Breathing difficulties such dyspnea, tiredness, dehydration, and decreased appetite, as well as heart rate and wet snoring that are accompanied by diminished bronchoalveolar breathing sounds, are further symptoms.

What are the Typical Pneumonia Symptoms?

Infection with gram-negative bacteria

Escherichia coli, Klebsiella, Pseudomonas aeruginosa, influenza B, and others are more prevalent.

2. Infections of the respiratory system

Fungi and anaerobic bacteria frequently present in the oropharynx in the elderly due to decreased body resistance, which can result in pneumonia.

3. Multiple infections

The elderly frequently display mixed illnesses brought on by various pathogens because of their impaired immune systems. Examples include bacteria, viruses, fungi, aerobic bacteria, anaerobic bacteria, and others.

4. Rise in microorganisms with drug resistance

The genes of pathogenic microbes have evolved to generate drug resistance as a result of the extensive and widespread usage of antibiotics, with Gram-negative bacilli being the most notable example.

What are the Signs and Symptoms of Pneumonia?

The following clinical characteristics describe aged pneumonia:

1. Symptoms

A few are symptomatic or asymptomatic, but the majority exhibit usual signs like fever and sputum. Lethargy, thirst, loss of appetite, shortness of breath and dyspnea, or conscious disturbance, are the first signs.

2. Signs

Pulse rate, breathlessness, lung auscultation, wet snoring noises, and decreased and bronchoalveolar breathing sounds may also be present.


1. Blood test

During regular blood tests, the overall number of white blood cells can rise or fall, but more than half of them exhibit nuclear shift to the left, elevated C-reactive protein, and rapid erythrocyte sedimentation.

2. Analysis of arterial blood gases

Although the arterial oxygen partial pressure may fall, the presence of chronic obstructive pulmonary disease and inadequate alveolar ventilation will result in an increase in carbon dioxide partial pressure.


3. X-ray of the chest

Radiological results indicated bronchial pneumonia.


4. Electrolyte and water

Acidosis, electrolyte imbalances, and water retention are common in senile pneumonia.

Causes of Pneumonia infection

What is the Pneumonia Diagnosis?

The diagnosis can be aided by using routine blood tests, chest X-ray examination, clinical symptoms and indicators, and medical history.

Sputum culture can prove the same harmful bacteria twice in a row.

What is the Pneumonia Treatment?

The drug should be chosen based on the findings of drug sensitivity tests and the type of germs present.

In case of signs like hypoxia, administer oxygen inhalation and symptomatic therapy.

 Prevention of complications: Strengthen the nursing of elderly patients, the diet should be light and easy to digest.
Pneumonia (lower respiratory infection, infectious disease of the lungs)

Treatment of Pneumonia through vaccines

What signs of pneumonia are there?

Tell you more about the signs and symptoms of pneumonia, particularly the initial ones.

What symptoms does pneumonia present with?

What occurs when you have pneumonia?

What Pneumonia Early and Late Symptoms are There?

Early indications: White mucus sputum or bloody sputum is coughed up due to an annoying dry cough. This cough is frequently accompanied by acute lateral chest discomfort that feels like acupuncture and is made worse by deep breathing or coughing.

Chest pain, fast and shallow breathing brought on by pulmonary consolidation, inadequate ventilation, and toxicity.

Some people experience digestive problems such nausea, vomiting, bloating, or diarrhoea.

Late Symptoms: Coughing up mucus, bloody, rusty, or rust-colored sputum, or the presence of purulent sputum.

Sputum production increases throughout the dissipative phase and is thin and yellow in colour.

lowers arterial blood oxygen saturation, interferes with gas exchange, and causes cyanosis to develop.

It's possible to have coma, irritation, lethargy, and fuzzy consciousness.


Neonate shortness of breath, wing flaps, wheezing, dyspnea, fever, cough, expectoration, wet snoring, sputum, sputum, bronchial mucosal edoema, and lung snoring are all associated symptoms.

Symptoms: The majority of them appear suddenly, and chilly rain, exhaustion, and viral infections are frequently to blame.

Before getting sick, almost one-third of them had upper respiratory infections. The illness lasts for 7–10 days.

1. Sudden chills followed by a high fever that can reach 39 to 40 degrees Celsius. This type of fever is usual in these cases and is frequently accompanied by headache, muscle aches, and decreased appetite.

Following the use of antibiotics, the heat type may be unusual, and the old and ill may experience a mild temperature or none at all.


2. Cough and sputum: A painful dry cough is the first stage, followed by white mucus sputum or red sputum.

Purulent sputum can also disappear after 1 to 2 days, as well as mucus, bloody sputum, or rusty sputum.

Increased phase sputum was thin, yellow, and coloured.


3. Chest pain: Severe lateral chest pains, frequently acupuncture-like, might extend to the shoulder or belly and are made worse by coughing or deep breathing.

When inferior lobe pneumonia is present, it can excite the pleura and create excruciating stomach discomfort that is frequently mistaken as acute abdomen.


4. Dyspnea: caused by quick, shallow breathing, pulmonary consolidation, inadequate ventilation, chest discomfort, and toxaemia.

Gas exchange is impacted, arterial blood oxygen saturation falls, and cyanosis develops when the situation is severe.


5. Additional signs and symptoms: a few people experience gastrointestinal issues such nausea, vomiting, bloating, or diarrhoea.

Serious infections can cause confusion, irritability, lethargy, and even coma in some people.

Chart Showing Pneumonia Symptoms

Describe Pneumonia Diagnostic standards?

Prior to making a diagnosis of pneumonia, upper and lower respiratory illnesses must be excluded.

Each respiratory infection has its unique traits despite sharing symptoms including cough, sputum, and fever.

Chest X-ray examination can detect upper and lower respiratory infections because they lack pulmonary parenchymal involvement.

The second step is to identify pneumonia from other pneumonias that are similar.

The following illnesses must frequently be recognised from pneumonia.


First, tuberculosis Systemic poisoning symptoms such as mild fever in the afternoon, night sweats, exhaustion, weight loss, sleeplessness, and palpitations are signs of tuberculosis.

X-ray chest radiography revealed lesions with unequal density, delayed dissipation, and the development of cavities or spread in the lungs, particularly on the apex of the lungs or above and below the clavicle.

Sputum contains the mycobacterium tuberculosis bacteria. Treatments with generic antimicrobial agents are ineffective.


2. Sputum may occasionally be bloodshot, but lung cancer typically lacks indications of acute infection and poisoning.

White blood cell count is not high, and the diagnosis can be confirmed if cancer cells are discovered in the sputum.


Obstructive pneumonia may coexist with lung cancer. After receiving antibiotics, pulmonary inflammation does not always resolve quickly, and occasionally hilar lymphadenopathy and atelectasis are seen.


Follow-up should be closely monitored if pulmonary inflammation does not resolve quickly after antibiotic therapy or if pneumonia recurs in the same location after a brief respite.

Individuals with a history of smoking and elderly patients require special monitoring.

To avoid a false diagnosis, further CT, MRI, fiberoptic bronchoscopy, and exfoliated sputum cells may be employed.

3. An acute lung infection Early clinical symptoms resemble those of pneumonia caused by Streptococcus pneumoniae.

However, as the illness got worse, a lot of pustular sputum was coughed up as a distinctive sign of lung abscess. The pus cavity and the amount of gas and fluid were visible on the X-ray image, making it simple to identify pneumonia from this condition.


4. thromboembolism in the lungs. Risk factors for venous thrombosis in pulmonary thromboembolism frequently include thrombophlebitis history, cardiopulmonary disease, trauma, surgery, and malignancy.

Hemoptysis, syncope, dyspnea, and jugular vein filling are possible side effects.


X A loss in regional lung texture was visible on a chest radiograph, and hypoxemia and hypocapnia were frequently found when arterial blood gas analysis was performed.

Identifying can be aided by tests such the D-dimer, MRI, radionuclide lung ventilation/perfusion scan, and CT pulmonary angiography.

5. Pulmonary infiltration that is not infectious It's important to rule out non-infectious lung conditions such pulmonary vasculitis, pulmonary eosinophil infiltration, atelectasis, and pulmonary interstitial fibrosis.

Detailed Chart showing Pneumonia

What Pneumonia Classification Exists?

1. Pneumococcus pneumoniae (Pneumococcus), Staphylococcus aureus, Streptococcus aureus type A, Klebsiella pneumoniae, Haemophilus influenzae, Pseudomonas aeruginosa, Escherichia coli, Green Pseudomonas, and others are examples of bacterial pneumonia.


2. Pneumonia brought on by unusual infections such Chlamydia, Legionella, and Mycoplasma.


3. Coronavirus, adenovirus, influenza, cytomegalovirus, herpes simplex virus, and other viral pneumonias.


4. Pneumonia caused by fungi such Candida albicans, Aspergillus, or Actinomyces


5. Pneumonia brought on by various infections, including pulmonary hydatid, pneumocystis, schistosomiasis, toxoplasma, and protozoa.

Pneumocystis carinii, Legionella, Mycobacterium avian, Tuberculosis, and Toxoplasma are prone to infect those with inadequate immunity (such as those with AIDS).


6. Pneumonia brought on by chemical and physical reasons, such as chemical pneumonia brought on by medications, inhaling stomach acid, or radiation pneumonia.


7. Pneumonia gas brought on by Mycoplasma pneumonia.

What worries do parents have about Paediatric Pneumonia?

If pneumonia is not promptly, consistently, and completely treated, it may reoccur or worsen, or it may even lead to secondary consequences like heart failure, empyema, lung abscess, myocarditis, or toxic encephalitis. Pneumonia that moves more quickly is equal

One test, two tests and three listening tests

 Pediatric pneumonia is an acute, serious, and quickly progressing illness.

It is a disease that poses a threat to the health and even life of children, but occasionally its symptoms are similar to those of infant colds and are easily misinterpreted.

Parents can easily recognise them by beginning with "one test, two looks, and three listens."

What constitutes bronchial pneumonia's diagnostic criteria?

Typical symptoms of bronchial pneumonia include coughing, fever, and shortness of breath.

A fixed, medium-fine wet rales of the lungs can be used to diagnose the condition.

Mycoplasma Pneumonia: What Is It?

Acute respiratory infections brought on by Mycoplasma pneumoniae are known as Mycoplasma pneumonia.

Of the pathogens used to be called primary atypical pneumonia, Mycoplasma pneumoniae is the most common.
Can start outbreaks, which account for 10% of all severe cases of pneumonia

How can typical pneumonia be distinguished from atypical pneumonia?

In Asia, "atypical pneumonia" is a widely used medical word.

Not only is it well known among medical experts, but the majority of non-professionals are also familiar with it.

However, the phrase was once known as "atypical pneumonia" in China before being renamed to "infectious atypical pneumonia" as a result of SARS (Severe Acute Respiratory Syndrome).

SARS is a term that is frequently used in media reports and spoken language.

Showing Diagrammatic view of Chest condition in Pneumonia

According to the cause, infectious pneumonia and non-infectious pneumonia are two different types of the condition known as pneumonia, which is an inflammation of the lung tissue.

Pneumonia brought on by pathogens such bacteria, viruses, fungi, mycoplasma, chlamydia, rickettsia, parasites, and spirochaetes is referred to as infectious pneumonia.

Non-infectious pneumonia refers to pneumonia caused by factors other than infectious pathogens, such as drug-induced pneumonia, radiation pneumonitis, chemical pneumonia, allergic pneumonia and connective tissue disease pneumonia.

Non-infectious pneumonia, also known as drug-induced pneumonia, radiation pneumonitis, chemical pneumonia, allergy pneumonia, and connective tissue disease pneumonia, is pneumonia brought on by causes other than infectious pathogens.

When used clinically, the term "pneumonia" refers to infectious pneumonia, which is characterised as lung tissue swelling and inflammation brought on by infectious microorganisms.

Bacteria are the most prevalent pathogens, followed by viruses, mycoplasma, chlamydia and fungi.

The most common pathogens are bacteria, followed by viruses, mycoplasma, chlamydia, and fungi.

Common bacteria including Streptococcus pneumoniae, Staphylococcus, Klebsiella pneumoniae, and Haemophilus influenzae can cause lobar pneumonia or bronchial pneumonia, which is referred to as typical pneumonia (TP).

Acute onset, abrupt onset of fever, chills, cough, sputum (particularly rust-colored sputum), chest discomfort, and dyspnea are the clinical characteristics.

Increased numbers of peripheral white blood cells.

Gram-positive cocci or Gram-negative bacilli can both be found in sputum.

If a chest X-ray reveals lung segment or lobe consolidation, antibiotic treatment is successful.

 Types of Pneumonia Chart Diagram

Atypical pneumonia was formerly used to refer to a group of illnesses that typically present slowly, with more severe systemic symptoms than lung symptoms.

In comparison to typical bacterial pneumonia, the prognosis is better. Atypical pneumonia was nearly synonymous with mycoplasma pneumonia for a long time after mycoplasma pneumoniae was discovered as the primary pathogen of the condition in 1966.


Later, Chlamydia pneumoniae, Chlamydia psittaci, Legionella pneumophila, Rickettsia burgdorferi, as well as various respiratory viruses such influenza viruses A and B, parainfluenza viruses, respiratory syncytial virus, and some other microbes, are among the pathogens of atypical pneumonia.

Prior to SARS

Before SARS, the idea of atypical pneumonia was as follows: Atypical pneumonia is a class of pneumonias with symptoms resembling pneumonia, chest X-ray characteristics, and an antibiotic response.

Its clinical features include occult start, a mostly dry cough, sporadic hemoptysis, and interstitial infiltration on chest radiography.

Typically, the disease process is modest, and patients rarely pass away as a result (good prognosis).

Mycoplasma pneumoniae and Chlamydia pneumoniae are the major pathogens that cause it.

Next to SARS

Due to the fact that many were unaware of the illness at the start of the SARS pandemic.

In addition to being called "atypical pneumonia," this unidentified illness was eventually given the moniker "infectious atypical pneumonia."

This idea has been applied frequently. Atypical pneumonia (SARS) is recognised by laypeople and regular people as SARS.


The Chinese Medical Association and the Chinese Academy of Traditional Chinese Medicine provided the following authoritative definition of "SARS" on September 30, 2003: A type of seemingly infectious pneumonia brought on by the SARS coronavirus is infectious atypical pneumonia (SARS-Cov).


The World Health Organization (WHO) has designated a unique form of pneumonia known as severe acute respiratory syndrome as it can have an impact on several organ systems (SARS).


Fever, exhaustion, headaches, discomfort in the muscles and joints, and other systemic symptoms, as well as dry cough, tightness in the chest, dyspnea, and other respiratory symptoms, are examples of clinical signs.

In some situations, stomach symptoms including diarrhoea may be present.


Lung infiltrates that are inflammatory can be seen on a chest X-ray. Lesions of pneumonia spread more quickly than regular pneumonia.

Diagram Showing Pneumonia Virus

During peak periods, the majority of the lesions affect both lungs, and they have a ground-glass appearance, as opposed to ordinary pneumonia, where the majority of lesions are unilateral and have a sheet-like appearance.

White blood cell levels are normal according to laboratory tests. Or lowered antibacterial treatment that is ineffectual is a crucial component.

Acute respiratory distress syndrome (ARDS) can quickly develop in severe cases with noticeable dyspnea (ARDS).


An acute respiratory condition known as the Middle East Respiratory Syndrome (MERS) was first identified as the result of a novel coronavirus in September 2012. The World Health Organization called the condition "Middle East Respiratory Syndrome" on May 23, 2013.

The virus first appeared in Saudi Arabia, after which it spread to other Middle Eastern and European nations.


Severe respiratory infections with symptoms like fever, coughing, shortness of breath, and dyspnea are the predominant clinical signs of the illness.


Renal failure can occur in certain cases, and a tiny percentage of patients merely exhibit the moderate or asymptomatic respiratory symptoms that are frequently discovered during exams.

manifestations of pneumonitis. Middle Eastern SARS is a term used by some to refer to the "Middle Eastern Respiratory Syndrome".


Since "typical pneumonia" and "atypical pneumonia" exist, it stands to reason that "atypical pneumonia" should refer to all pneumonia (including infectious pneumonia) and exclude "typical pneumonia."

The illnesses with respiratory symptoms caused by SARS, however, now have their own names, such as the novel coronavirus COVID-19, which is not just another moniker for "atypical pneumonia."

Author's Bio

Doctor Shawna Reason, Virologist
Dr. Shawna Reason
Name: Shawna Reason

Education: MBBS, MD

Occupation: Medical Doctor / Virologist 

Specialization: Medical Science, Micro Biology / Virology, Natural Treatment

Experience: 15 Years as a Medical Practitioner

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