Warning Signs of Sepsis – When to Worry and When to See a Doctor
Sepsis is a life-threatening medical emergency that requires immediate action. Recognising the early warning signs and knowing what to do could quite literally save a life.
In this comprehensive guide, we explain what sepsis is, what causes it, key symptoms to look out for, and the exact steps to take if you suspect sepsis in yourself or someone else.
1. What Is Sepsis?
Sepsis is a severe and potentially fatal condition that occurs when the body has an overwhelming and abnormal response to an infection. Under normal circumstances, your immune system fights off illness. With sepsis, however, the immune system goes into overdrive and begins to damage the body’s own tissues and organs instead.
2. Understanding Septic Shock
As sepsis progresses without treatment, it can rapidly lead to a critical condition known as septic shock. During septic shock, blood pressure drops to a dangerously low level. This deprivation of blood flow can cause rapid organ failure, severely affecting vital systems including the lungs, kidneys, liver, heart, and brain. Septic shock is immediately life-threatening and requires intensive medical intervention.
⚠️ Important Note: Sepsis is not contagious. You cannot catch sepsis from another person, though you can catch the underlying infections that sometimes trigger it.
3. What Causes Sepsis?
Sepsis does not occur on its own; it is always triggered by an underlying infection. It can develop from many different types of illnesses, ranging from minor localized issues to severe systemic infections. Common triggers include:
-
Bacterial infections (such as pneumonia, urinary tract infections, or skin infections)
-
Viral infections (including influenza or COVID-19)
-
Fungal infections
-
Infections following surgery, medical procedures, or physical injury
4. Meningococcal Infection and Sepsis
One well-known and highly dangerous cause of sepsis is meningococcal infection. This specific bacterial illness can lead to meningococcal septicaemia (a severe bloodstream infection) and/or meningitis (an infection of the protective lining surrounding the brain and spinal cord). It progresses exceptionally fast and requires emergency treatment.
5. Meningococcal Rash Explained
A classic sign of meningococcal septicaemia is a distinctive non-blanching rash. This appears as small red or purple spots that do not fade or disappear when pressure is applied.
You can check this using the “glass test”—press the side of a clear drinking glass firmly against the rash. If the spots stay clearly visible through the glass, it is a medical emergency. The rash may spread rapidly and begin to look like large, dark bruises.
6. Crucial Misconceptions About Rashes
While the glass test is a vital tool, relying too heavily on it can be dangerous. It is absolutely critical to understand that:
-
Not all sepsis causes a rash. Most types of sepsis do not present with skin spots.
-
Many different organisms can trigger sepsis, not just meningococcal bacteria.
-
The absence of a rash does not rule out sepsis. If someone is severely unwell, never wait for a rash to appear before seeking help.
7. Warning Signs and Symptoms – When to Worry
Symptoms of sepsis can appear suddenly and worsen with terrifying speed. You should seek urgent medical help immediately if you or someone else notices any of the following physical and mental changes:
-
Skin changes: Pale, blotchy, blue, or grey skin, lips, or tongue.
-
Rashes: A distinct rash or spots that do not fade when pressed.
-
Breathing difficulties: Fast breathing, breathlessness, or struggling to breathe.
-
Mental decline: Confusion, disorientation, slurred speech, or difficulty speaking.
-
Severe lethargy: Extreme drowsiness, confusion, or difficulty waking up.
-
Child-specific signs: A weak, unusually high-pitched cry in babies or young children.
-
Systemic feelings: Feeling unusually cold, shivering uncontrollably, or feeling profoundly unwell.
In children, the elderly, and vulnerable adults, these symptoms may initially be subtle, but they are still incredibly serious.
8. When to See a Doctor – and Where to Go
If you think you or someone else may have sepsis, you must act immediately. Time is the most critical factor.
Get urgent medical help now:
-
Call 999 immediately if symptoms are severe, widespread, or worsening rapidly.
-
Call NHS 111 for urgent advice if you are deeply concerned but unsure.
-
Go straight to A&E or your nearest Urgent Treatment Centre (UTC).
⏰ Do not wait to see if symptoms improve. Trust your instincts.
9. Why Acting Quickly Matters
Sepsis is a race against the clock. When caught early, it is highly treatable with straightforward medical interventions. Early treatment with intravenous antibiotics, fluids, and oxygen can:
-
Prevent permanent organ damage and failure
-
Drastically reduce the risk of long-term, life-altering complications
-
Significantly improve overall survival chances
Conversely, delaying treatment by even a few hours can allow the condition to escalate to a fatal stage.
10. Summary and Key Takeaways
To keep yourself and your loved ones safe, keep these vital points in mind:
-
Sepsis is always a medical emergency.
-
It can be caused by almost any infection, not just meningococcal disease.
-
A rash may not always be present; do not wait for one.
-
Trust your instincts—if a loved one seems far sicker than usual, ask a doctor: “Could this be sepsis?”
Bottom Line
If you believe you or someone you care for may have symptoms of sepsis, call 999, contact NHS 111, or go to A&E or a UTC immediately.
Further Information
If in doubt, act now. Sepsis is always an emergency.
