Is pleurisy dangerous?
The inflammation itself usually is not. What causes it may be.
Pleurisy is a sign, not a diagnosis — and one of the possible causes, a clot on the lung, can be fatal and is very treatable once found.
Why do you keep mentioning clots?
Because pulmonary embolism is one of the commonest causes of pleuritic chest pain, and people who look and feel reasonably well can have one.
It has to be excluded before anything else is assumed, which is why this needs same-day assessment.
Can you diagnose this online?
No, and we will not try. It needs a chest listened to, oxygen levels measured, and same-day access to a D-dimer or CT scan.
We will tell you that immediately rather than taking a fee for a consultation that ends by sending you to A&E anyway.
What does it feel like?
Sharp and catching, clearly worse when you breathe in, and usually on one side. Coughing, sneezing and moving make it worse; holding your breath eases it.
Many people can point to exactly where it hurts.
My pain got better but I am more breathless. Is that good?
No — that combination needs urgent assessment. Fluid building up between the layers separates them, so the rubbing stops and the pain eases.
The pain improving is not the same as the problem improving.
How long does it last?
Viral pleurisy usually settles over several days to a couple of weeks.
Anything else lasts as long as its cause takes to treat, which is another reason the cause matters more than the pain.
What helps the pain?
Anti-inflammatories — ibuprofen or naproxen — work better than paracetamol alone for this particular pain.
Holding a pillow against your chest when you cough helps, and so does lying on the painful side. Do keep taking some deep breaths despite the discomfort.
Could it be a heart problem instead?
Pericarditis causes similar pain, though it is typically better sitting forward and worse lying flat.
Crushing central pain with sweating, nausea, or pain into the arm or jaw is different again — that is 999 immediately.
I keep getting pleurisy. What does that mean?
Recurrent pleurisy warrants looking for an underlying autoimmune condition, particularly lupus or rheumatoid arthritis.
In lupus, pleurisy can be the presenting feature, and the diagnosis is often delayed by years.
Is it contagious?
Pleurisy itself is not, but the viruses that cause it are.
Pneumonia and tuberculosis, which can also cause it, spread between people — another reason the cause needs establishing rather than assuming.