What is Sepsis? Signs, Causes, and Why You Must Act Fast
Sepsis is a very dangerous medical emergency that happens when your body has an extreme and life-threatening response to an infection. As the Mayo Clinic explains, your immune system normally works to fight off germs like bacteria or viruses to keep you healthy. In sepsis, this infection-fighting process malfunctions and instead turns against the host.
According to the Cleveland Clinic, this can cause your organs to stop working properly and can even lead to death if a doctor does not treat it very quickly. Johns Hopkins Medicine notes that sepsis is not contagious, meaning it cannot be transmitted from one person to another, but it can occur in anyone with an infection that becomes uncontrolled.
How to Spot the Warning Signs
Because sepsis can get worse in just a few hours, you need to know exactly what to look for so you can get help right away. As the Mayo Clinic notes, one of the most common signs is a high fever or feeling very cold, with shivering. You might also notice that you feel very confused, sleepy, or have difficulty waking up.
The Cleveland Clinic mentions that many people with sepsis feel extremely ill and have severe body pain or a lot of trouble breathing. Other symptoms to watch out for include a heart that is beating very fast, skin that feels sweaty or clammy, and not urinating as much as you usually do.
What Causes Sepsis to Happen
Any infection can lead to sepsis, whether caused by bacteria, viruses, or fungi. According to Johns Hopkins Medicine, some of the most common sites of infection are the lungs, as in pneumonia.
As the Cleveland Clinic explains, sepsis can also arise from a urinary tract infection in the bladder or kidneys. Infections in the gut, like appendicitis, or infections on the skin from a burn or a simple cut, can also trigger this dangerous reaction.
People Who are at Higher Risk
While anyone of any age can get sepsis, some groups of people are more likely to get very sick from it. This includes adults aged 65 or older and infants younger than 1 year.
Individuals who have weakened immune systems because of treatments like chemotherapy or diseases like HIV are also at a higher risk. Chronic health problems, such as diabetes, lung disease, or kidney disease, can impair the body’s ability to fight infections.
How Doctors Treat Sepsis in the Hospital
When someone has sepsis, they need to stay in the hospital so doctors can watch them closely, often in the intensive care unit or ICU. Treatment must start as fast as possible to save the person’s life. Doctors will administer antibiotics intravenously to kill the bacteria.
According to PubMed Central, fluids are also administered intravenously to maintain a safe blood pressure and ensure adequate hydration of organs. Some patients may require supplemental oxygen or mechanical ventilation to maintain adequate oxygenation.
How to Protect Yourself and Your Family
The best way to prevent sepsis is to prevent infections from starting in the first place. You should wash your hands with soap and water frequently to prevent the spread of germs.
As the Mayo Clinic suggests, if you get a cut or a scrape, make sure to clean it well and keep it covered with a bandage until it is fully healed. Staying up to date on vaccines for conditions such as the flu and pneumonia can also prevent infections before they progress to sepsis.
The Bottom Line
Sepsis is a medical emergency in which the body’s response to an infection causes organ dysfunction. Early recognition of symptoms, like confusion, fever, and extreme pain, followed by immediate hospital treatment with antibiotics and fluids, is the most effective way to survive and prevent long-term complications.
Frequently Asked Questions
Can you catch sepsis from another person?
No, sepsis itself is not contagious. However, infections that lead to sepsis, such as influenza or pneumonia, can be transmitted from person to person.
Is sepsis the same as “blood poisoning”?
Yes, “blood poisoning” is an older term used to describe sepsis, or the presence of bacteria in the blood (bacteremia) that triggers a severe immune response.
How fast does sepsis develop?
Sepsis can develop very rapidly, often within hours of an infection worsening. This is why medical experts emphasize that “every minute counts”.
Sources
Mayo Clinic. Sepsis - symptoms and causes. Mayo Clinic. Published February 10, 2023. https://www.mayoclinic.org/diseases-conditions/sepsis/symptoms-causes/syc-20351214
Cleveland Clinic. Organ failure. Cleveland Clinic. Published February 6, 2023. https://my.clevelandclinic.org/health/diseases/24679-organ-failure
John Hopkins Medicine. Septicemia. Johns Hopkins Medicine. Published 2019. https://www.hopkinsmedicine.org/health/conditions-and-diseases/septicemia
Mayo Clinic. Fever - symptoms and causes. Mayo Clinic. Published 2022. https://www.mayoclinic.org/diseases-conditions/fever/symptoms-causes/syc-20352759
Cleveland Clinic. Sepsis: Causes, symptoms, treatment & prevention. Cleveland Clinic. Published 2023. https://my.clevelandclinic.org/health/diseases/12361-sepsis
Johns Hopkins Medicine. Pneumonia. John Hopkins Medicine. Published 2025. https://www.hopkinsmedicine.org/health/conditions-and-diseases/pneumonia
Cleveland Clinic. Urosepsis. Cleveland Clinic. Published 2023. https://my.clevelandclinic.org/health/diseases/25008-urosepsis
Silva C, Marcos P. Intravenous fluid therapy: essential components and key considerations. Porto Biomedical Journal. 2025;10(4). doi:https://doi.org/10.1097/j.pbj.0000000000000296
Mayo Clinic. Cuts and scrapes: first aid. Mayo Clinic. Published November 17, 2017. https://www.mayoclinic.org/first-aid/first-aid-cuts/basics/art-20056711
Comments are closed.