What Happens at an Infectious Disease Consultation

Being referred to an infectious disease specialist worries people more than most referrals. The name sounds alarming, and it is not a specialty most patients have encountered before.

The appointment itself is undramatic. It is mostly conversation, it runs longer than most specialist visits, and the history you give will do more diagnostic work than any test ordered on the day.

Why the conversation is the main event

Infectious disease is unusual among specialties in how much it depends on narrative. Where you have been, what you were exposed to, what you do for work, what animals you have, what you took and when — these narrow the possibilities in a way that no panel of blood tests can.

This is why the appointment is long and why the questions can seem tangential. A question about a holiday two years ago, or a cat, or a hot tub, is not small talk. Our article on fever after international travel shows how much one such detail can change.

What the appointment is, and what people expect

	Common expectation	What usually happens
Length	Fifteen minutes	Often forty-five to sixty on a first visit
The main activity	Examination and tests	A long, detailed history
Tests on the day	Many, immediately	Often few; existing results are reviewed first
Leaving with	A prescription	Frequently a plan and a follow-up
An answer	Same day	Sometimes; often after results, sometimes after a period of observation
Who else is involved	Just the specialist	Usually your own doctor and the referring team as well

That fourth row is worth setting expectations around. Leaving without a prescription is a common and often correct outcome — deciding that an antibiotic is not needed, or that a sample must be taken first, is frequently the most useful thing the visit produces. Our article on culture and sensitivity results explains why the order matters.

It is also worth knowing that a referral is not a verdict. Being sent to an infectious disease clinic does not mean anyone has concluded you have something rare or serious. Frequently the referral exists to settle a question, and a common outcome is confirming that what you have is ordinary and already being treated correctly.

What to bring

1. A complete list of medications, including over-the-counter and supplements; see antibiotics and your other medicines
2. Every antibiotic you have taken recently, with dates if you have them
3. Any allergy and what actually happened; see whether a penicillin allergy is real
4. Results, scans and discharge summaries you hold copies of
5. Vaccination records if you have them; see adult vaccines
6. Travel history for the past year or two, with rough dates
7. A written list of your own questions, which is easy to forget in the room

If you cannot assemble all of it, come anyway. Partial information gathered in advance is far better than none, and the clinic can usually request the rest.

The questions, and why they go where they do

• Travel, including stopovers, and how long ago
• Work, particularly healthcare, food handling, farming or construction
• Animals at home, and any bites or scratches; see animal and human bites
• Hobbies involving soil, fresh water, caves or hunting
• Recent hospital stays, surgery, or any implanted device; see infection after a joint replacement
• Sexual history, asked of everyone and not an assumption; see what a full STI panel covers
• Medicines that suppress the immune system; see vaccines when your immune system is suppressed
• What has already been tried, and what happened

What the specialty actually does

Infectious disease physicians are internal medicine doctors with additional training in infection. Much of the work is not treating straightforward infections, which are handled perfectly well elsewhere, but the situations where something does not fit.

• A fever or illness with no diagnosis after the usual tests; see a fever that will not go away
• An infection that keeps returning after apparently successful treatment
• A resistant organism, or a culture result that does not match the picture; see what MRSA means and culture and sensitivity
• Deep infections needing weeks of treatment, in bone, joints, valves or implants
• Infection in someone whose immune system is suppressed
• Long-term conditions managed continuously, including HIV care and hepatitis C
• Advice on whether an antibiotic is needed at all, which is a large part of it

Bring someone if you can

A first appointment covers a great deal of ground, and most people remember less of it than they expect. A second person hears different things, asks the questions you forget, and can write while you talk.

If nobody can come, ask whether you may record the summary at the end, or ask the clinician to write the plan down. Neither request is unusual, and both are easier than reconstructing the conversation later that evening.

What happens afterwards

You will usually leave with a plan rather than a conclusion: tests to be done, a treatment to start or to stop, and a point at which it will be reviewed. Where treatment is long or intravenous, that is arranged from here — see outpatient IV antibiotics and what an infusion appointment involves.

A letter goes to your own doctor, and often to whoever referred you. Ask for a copy; it is the clearest summary of the reasoning you will get, and it is useful if you are seen elsewhere later.

Sometimes the honest answer on the day is that more time is needed — that a course of observation, or repeating a test in a few weeks, will be more informative than acting now. That is a decision rather than a delay, and our article on a fever that will not go away describes how that kind of investigation is sequenced.

Our article on when to see an infectious disease specialist covers the reasons a referral is made in the first place. You can reach us through the contact page, and the practice pages set out the services we provide.

Frequently asked questions