What is pneumonia and how does it affect the body?

What are the effects of pneumonia?
on Mon 22 Mar

Pneumonia is a swelling in the air sacs (alveoli) of one lung or both whereby they fill with fluid or pus which makes it hard to breathe.


Most common in the winter, pneumonia generally affects about 1% of the population with those most at risk including


  • The very young
  • Those over 65
  • People who have chronic heart, lung, brain, liver or kidney disease.
  • People with diabetes
  • Those with cancer, especially if they are undergoing treatment with chemotherapy
  • Those on immune-suppressants
  • People who smoke or drink excessively


It is possible to get pneumonia more than once but if this is a regular occurrence you may be referred to a speciality.


What are the main symptoms of Pneumonia?


Pneumonia can occur over several hours or several days with coughing being the main symptom.


It is likely that you will simultaneously feel tired and unwell with at least one of these further symptoms


  • yellow or green mucus
  • a high temperature
  • rapid breathing or difficulty in breathing
  • chest pain
  • no appetite
  • a lowered temperature – especially in those over 65 or with lowered immunity


Those with more severe episodes of pneumonia will probably also experience


  • low blood pressure
  • confusion
  • nausea or sickness
  • coughing up blood
  • sweating
  • a change in skin colour to blue or purple hues due to poorly oxygenated blood
  • a sharp chest pain as you breath in and out


 What causes Pneumonia?


The most typical cause is a bacteria called Streptococcus pneumoniae but it can also be caused by


  • a contagious virus this is often the case in children
  • COVID-19
  • the inhalation of a foreign object or food going down the wrong way
  • having been in hospital – particularly on a breathing machine
  • rarely in the Uk – by fungi


You should see a GP when…


  • You develop pneumonia and are in one of the high risk groups just listed
  • Your temperature persists at 39C or higher
  • You are coughing persistently , or coughing up pus


This condition can be life threatening and should not go untreated. You might be shocked to learn that it is the leading cause of death due to infection worldwide  in children aged below 5.


Complications can include bacteria entering the bloodstream which can cause organ failure; fluid accumulating around the lung and an abscess on the lung.



Diagnosis and Treatment


A doctor will listen to your chest and back with a stethoscope to listen for crackling or bubbling sounds in the lungs, they may use an Oximeter to check the oxygen in your blood and may do blood tests to check the cause. A chest X-Ray may be used to see how far the illness has progressed


Depending on the severity and duration your Doctor is likely to prescribe over the counter medicines to lower your temperature, suppress your cough and reduce any aches or pains.


If your pneumonia is bacterial in origin you will be prescribed antibiotics.


It is important to rest and hydrate.


If symptoms are particularly bad you may be admitted into hospital where intravenous fluids, intravenous antibiotics an oxygen may be administered


There are vaccines available for certain types of pneumonia and flu so talk to your Doctor about these if you are at risk and make sure that you practice good hygiene to protect yourself against respiratory diseases generally.


I hope this has been helpful


We make every effort to ensure that all health advice on this website is accurate and up to date. However it is for information purposes and should not replace a visit to your doctor or health care professional. As the advice is general in nature rather than specific to individuals we cannot accept any liability for actions arising from its use nor can we be held responsible for the content of any pages referenced by an external link.


About Stephanie Acne Age-related Macular Degeneration AIDS alcohol units and effects allergies Andropause angina anorexia Anti Ageing Anxiety arrhythmia arthritis asthma atrial fibrillation back pain basic metabolic rate BHRT bio-identical hormones Biog Bloating blood pressure BMR bone density Book review bowel cancer brain fog brain tumour Bronchitis bulimia Bursitis calcium Cancer cancer signs and symptoms carpal tunnel syndromw cervical cancer Cervical smear Charles Bonnet Syndrome check your pulse cholesterol chronic fatigue syndrome coeliac disease cold virus contraception COPD coronary thrombosis coronavirus covid-19 Deep vein thrombosis dehydration signs Delaying menopause Dementia Depression dermatitis Diabetes Digestive problems digital health Donor advice DVT dyspareunia Ear infections Early menopause eating disorders eczema endometriosis exercise fertility fibroids fitness flu gallstones Gardisil Genetic testing government health policy hair loss hayfever Health Awareness Day Health Awareness Month Health Awareness week health warning healthy eating heart attack heart attacks Heart Disease Helpful supplements Hepatitis High blood pressure HIV Hives Hormone Replacement Therapy hormones hot flushes HPV HRT HRT & breast cancer HRT in the news HRT risks hydration benefits Hypertension IBS immune system itching Itchy Skin joint pain kidney function Laryngitis Leukaemia libido lichen sclerosus lifestyle liver Liver Disease Long Covid Symptoms lowered immmunity Lung cancer Lupus LUTS Macular Degeneration Magnesium# Male Menopause Managing Anxiety Managing Stress ME/CFS Men's health Meningitis Menoapuse advice for partners menopause menopause and dental health Menopause Specialist menopause symptoms Menopause Weight Gain menpause Menstrual Cycle Menstruation Menstruation and Athletes mental health Mental health support metabolism microbiome Migraine Migraines Motivation technique mouth cancer night sweats Norovirus oestrogen osteoarthritis Osteoporosis Paget's disease painful sex palpitations Pancreatic Cancer Parkinson's Parkinsons pelvic pain Perimenopause perimenopause and breast pain Pneumonia POI post menopause vocal syndrome Premature Ovarian Insufficiency Probiotics Prolapse prostate prostate cancer Pruritis Psoriasis Psychosexual medicine reflux rheumatoid arthritis Rosacea sarcoma self harming sex sex and disability sexual health Shingles Sinusitis skin cancer Skin health sleep Statins Staying positive STI's Strep A Strep throat stroke Takayasu Arteritis talks and presentations TB testosterone Tinnitus trying to lose weight tuberculosis Type 2 Diabetes underactive thyroid Urinary Infections Urinary Tract Infection Using a private GP UTI's vaginal dryness Vascular awareness month vegan diets Vitamin D Vulval itching Winter Vomiting Bug women's health World Health Day

Email enquiry form

How To Find Us

25 Harley Street, London W1G 9QW

Newsletter Signup

You can unsubscribe at any time by clicking the link in the footer of our emails. For information about our privacy practices, please visit our website.


We use MailChimp as our marketing platform. By clicking below to subscribe, you acknowledge that your information will be transferred to MailChimp for processing. Learn more about MailChimp's privacy practices here.