Most people who book for a chest infection have already had 4 or 5 days of coughing through the night. The paracetamol has gone in. Someone at work has said it sounds chesty. The question they bring into the room is rarely “what is this”. It is whether today is the day they finally get the bottle they have been waiting for.
Most chest infections are viral. Green phlegm on its own does not decide it. Chest infection antibiotics help when the picture is bacterial, not because the request was firm, and not because the colour of the tissue was convincing.
Chest pain, signs of a stroke, severe breathlessness, heavy bleeding, a severe allergic reaction or symptoms of sepsis need 999 or A&E immediately.
When chest infection antibiotics actually help
The short version is this. Antibiotics treat bacteria. A virus does not care what colour the phlegm is. Plenty of viral coughs produce green or yellow sputum by day 3 or 4, because white cells have arrived. That is inflammation. It is not a laboratory result.
Here is the longer version. NICE is clear on acute cough and on pneumonia, and clinic is messier than either guideline, because the person in front of me is not a flowchart. I respect both. What I am trying to decide is whether this is an ordinary lower respiratory tract infection that will settle with time, fluids, rest, and a safety net, or a bacterial pneumonia, or a flare of asthma or COPD, or a clot, or heart failure pretending to be a chest infection, or covid or flu still doing what they do.
Antibiotics earn their place when the examination and the story line up with a bacterial infection: a new focal crackle, a fever that is high and holding, a respiratory rate that is up, oxygen that is down, a person who looks more unwell than a cold should make them, especially if they are older, or they have a chest that was already fragile. They do not earn their place because it is Friday and nobody wants to be unwell at the weekend. They do not earn their place as a thank you for coming in. They do not earn their place because last time a different doctor issued them and it “worked”, which often means the virus ended on the same day as the first tablet.
It is worth saying plainly. I will not withhold a medicine that is indicated because I am performing restraint. I also will not issue one that is not indicated because the hour is awkward. If I am uncertain, a delayed course is sometimes the honest middle: treatment you only start if, in 3 days, you are worse or no better, with a clear list of what “worse” means. That is not a brush off. That is how you avoid treating a virus and still catch the turn.
A chest x ray is not automatic. It is useful when the diagnosis is in doubt, when you are not settling, when there is blood in the sputum, when there is weight loss, when you smoke and this cough has gone on too long, or when I can hear something I cannot name from the history alone. It is not a souvenir of the appointment.
What I look at on the chest
What I look at in clinic is the person before the stethoscope. Can you finish a sentence. Are you using the muscles in your neck to breathe. What is the respiratory rate when you are not watching me watch it. What is the oxygen saturation. What is the pulse. What is the blood pressure. Are you confused in a way that is new. Fever. Capillary refill. That cluster is how pneumonia announces itself, and it is also how sepsis does. If that cluster is wrong, this is not a blog problem. This is A&E or 999.
Then the history, in order. How many days. Whether there was a sore throat or a cold first. Whether there is wheeze. Whether you have asthma or COPD and whether your usual inhaler has stopped being enough. Whether you smoke, or used to, and how many years. Whether there is chest pain, and whether it is pleuritic, cardiac, or muscular. Whether there is blood. Whether one calf is swollen. Whether you have been on a flight or in bed. A clot can look like a chest infection until it does not. I would rather ask the extra questions than miss that pattern.
Smoking history, breathlessness at rest, confusion, and a cough that has lasted weeks rather than days all change the next step. So does heart failure: swollen ankles, waking at night short of breath, a weight rise over a week. So does a foreign body in a child. So does aspiration in someone who already swallows poorly. The presenting label is “chest infection”. The job is to notice when the label is wrong.
Then I listen. Both sides. Front and back. The bases, because that is where the quiet crackles sit. I am listening for a focal change on one side, for wheeze, for the silence that is worse than a noise. I look at the throat. I look at the ears in children. I look at the calves if a clot is in the differential. I look at the peak flow if you have asthma and we have a meter to hand.
The second layer, when this comes up in consultation, is often not the lungs. It is being believed. People who have been told it is “just a virus” three times start to ask more firmly for antibiotics, because asking firmly is the only lever they have left. Taking the chest seriously, explaining what I can hear and what I cannot, giving a specific review date rather than “if it persists”: that is the medicine as much as the tablet is. A review in 3 days is a plan. “See how you go” is a shrug.
If you are improving, we wait. If you are stuck at day 10 with fever, or you are getting worse, we look again. If you are breathless at rest, confused, or dropping your oxygen, we do not look again next week. We send you in now.
When to come in sooner
Some of this should not come to Palmers Green at all. Some of it should come today rather than Monday.
- Severe breathlessness, chest pain, signs of a stroke, a severe allergic reaction, heavy bleeding, or symptoms of sepsis: 999 or A&E.
- Confusion that is new, a very high fever that will not settle, or you cannot get a sentence out without stopping.
- Coughing blood, or rust coloured sputum that is new.
- A swollen painful calf, or breathlessness that started suddenly, especially after travel or surgery.
- You have COPD, asthma, heart failure, cancer, or you are on medicines that suppress immunity, and this flare is not behaving.
- A child who is working hard to breathe, is floppy, or is not drinking.
If none of that is true and you are simply not sure, be seen. Guessing the script from the colour of a tissue is how people either wait too long or take a medicine they did not need.
How we approach a chest infection here
You can be seen at Clinique Alpa, 466 Green Lanes, Palmers Green, often the same day, subject to the diary. A 30 minute appointment is £100. If you are too unwell to travel, a home visit is £250 in the day and £450 at night, up to an hour. We examine you in the room. We do not diagnose a chest from a description of phlegm.
If antibiotics are indicated, you leave with them and with a safety net: what should be better by when, and which turn means A&E rather than a message to us. If they are not indicated, you leave with the same safety net and a review date. That date is a real number of days. Not “if symptoms persist”.
If a chest x ray or bloods would change the decision, we say so. A blood draw is £20 plus the test. If a specialist chest clinic is the next step, a referral letter is £50 after the assessment. Fees sit on the fees page and are agreed before we start.
With your consent we write to your NHS GP. A private visit that never reaches the NHS record leaves the next doctor starting from zero when you are unwell again in January.
If I do not know yet, I will say I do not know yet, and we will look again in 2 or 3 days. That is a better sentence than a box of tablets you did not need.
Be examined rather than guessing the script. Read our fees page, or call 020 8882 8088. 30 minutes £100. Home visits £250 in the day, £450 at night, published in full. In an emergency call 999. Subject to availability.
Written by Dr Mitesh Parmar, MBBS MRCGP, GP and founder of Clinique Alpa, 466 Green Lanes, Palmers Green, London N13 5PA. This article is general information, not personal medical advice. In an emergency call 999. For NHS advice call 111 or visit nhs.uk.