Primary Care, Fast and Slow

The schedule says “another UTI.” The patient says, “This time I’m vomiting.” That sentence changes the visit. The skill behind efficient primary care is recognizing the familiar presentation while staying available to the detail that overturns it.

This is a play on Daniel Kahneman’s Thinking, Fast and Slow. In clinic, it helps to distinguish three situations: a problem you can finish with a focused assessment, uncertainty that deserves more time, and danger that requires a different care setting.

Choose the pace

Start with “What has been happening, and what were you hoping we could help with today?” Ask about other concerns early enough to prioritize them. Then establish the trajectory, severity, and finding that would change your plan.

Pregnancy, immunosuppression, frailty, altered anatomy, and a return after treatment failure can change the pathway. So can a practical constraint: observation means something different when the patient cannot obtain a recheck.

Visits that can stay focused

UTI · URI · Sinus pressure · Earache · Sore throat · AWV · Back pain

The boxes collect orders and instructions for the stated presentation. Select the items the patient needs; they are not bundles to order in full.

Dysuria: establish that this is a bladder problem

Ask: burning, frequency, urgency, duration, vaginal symptoms, STI exposure, and pregnancy possibility. Check fever, chills, flank pain, vomiting, prior cultures, recent antibiotics, allergies, renal function, and urinary tract abnormalities or procedures.

Examine: vital signs, general appearance, and abdominal or flank findings suggested by the history. The uncomplicated pathway below fits an otherwise well, nonpregnant woman with lower urinary symptoms and no important complicating features.

Say, once the pattern fits: “This looks like a bladder infection. You should begin feeling better over the next couple of days. Call sooner for fever, pain in your side, or vomiting; those need a new assessment.”

Change pace: possible pregnancy, prostate involvement, or kidney infection needs a different pathway. Systemic illness, inability to drink, or possible infected obstruction may require emergency care. Nitrofurantoin does not treat kidney infection.

A positive urine result without urinary symptoms usually does not justify treatment. Important exceptions include pregnancy and selected invasive urologic procedures. Confusion with bacteriuria alone should prompt a search for other causes.

IDSA/ESCMID: cystitis regimens and scope; IDSA: asymptomatic bacteriuria; NICE: lower UTI reassessment. UK prescribing guidance may differ from US practice.

URI and cough: treat the symptom that brought them in

Ask: onset and direction of change, breathing, fever course, chest pain, hydration, cardiopulmonary disease, and treatments already tried. Identify influenza or COVID-19 risk and the treatment window before concluding that only symptom care is needed.

Examine: respiratory effort, vital signs, lungs, and oxygenation when indicated. New breathlessness, abnormal vital signs, or focal lung findings should prompt assessment for pneumonia or another cause. Frail or immunocompromised patients may lack fever.

Say: “The findings fit a respiratory virus. Which is worse right now: the congestion, the cough, or the aches? Let’s start there. A cough can outlast the other symptoms, but new trouble breathing or getting worse after improving needs another assessment.”

Recheck: worsening, returning fever, or symptoms persisting without improvement. Hypoxemia, confusion, significant dehydration, or respiratory distress needs urgent assessment.

CDC: bronchitis assessment; cold symptom care; influenza treatment decisions; COVID-19 drug selection and prescribing links.

Sinus pressure: the timeline does much of the work

Ask: days ill, initial improvement followed by worsening, obstruction or discharge, fever, facial or dental pain, and unilateral symptoms. Pressure or colored mucus alone does not establish bacterial disease.

Say during observation: “We can treat the pressure while we watch the course. We’ve agreed when to check back and what would make an antibiotic worth starting.”

Escalate: visual change, painful or restricted eye movement, eye swelling with those findings, severe unusual headache, neurologic symptoms, or marked systemic illness needs urgent evaluation. Severe illness should not wait for day ten. Persistent unilateral or dental symptoms deserve evaluation of another source.

AAO-HNS: 2025 sinusitis guideline; CDC: safe irrigation.

Earache: locate the problem before choosing a drug

Ask and examine: distinguish pain, pressure, and hearing loss; establish sudden versus gradual onset. Inspect the canal and tympanic membrane, check tragal tenderness, and consider jaw or dental pain. Ask about drainage, instrumentation, diabetes, immunosuppression, and prior perforation or surgery.

Say for canal infection: “The infection is in the ear canal. The drops need to reach that skin; let’s go over how to use them. Contact us if you are not improving within two to three days.”

For suspected middle-ear infection, look for effusion and bulging or other convincing acute findings; redness alone is insufficient. Confirmed adult acute otitis media needs analgesia and an antibiotic decision based on severity, risk, and the local adult pathway; amoxicillin is a usual first choice when treatment is indicated.

Act today: sudden unexplained hearing loss needs immediate ENT contact or an emergency pathway, aiming for assessment within 24 hours. Mastoid swelling, facial weakness, or severe deep pain in a patient with diabetes or immunosuppression also warrants urgent assessment. Persistent unilateral pain with a normal ear exam needs a referred-source evaluation, especially with swallowing symptoms or a neck mass.

AAO-HNS: otitis externa; primary care handbook; NHS Borders: adult otitis media (UK pathway); NICE: sudden hearing loss.

Sore throat: separate the airway question from the strep question

Ask and examine: swallowing, hydration, voice, unilateral pain, fever, cough, rhinorrhea, exposures, oropharynx, and neck. Consider mononucleosis or sexual exposure when the history points there.

Say when testing is warranted: “The test will help us decide whether an antibiotic will help. Either way, we can make swallowing more comfortable.”

Escalate now: drooling, stridor, respiratory difficulty, trismus, muffled voice, neck swelling, or inability to swallow fluids requires urgent airway/deep-infection assessment. Reassess persistent or worsening symptoms even after a negative test.

CDC: testing and treatment.

Annual wellness: make preparation earn its place

An AWV is a prevention-planning service. It belongs here because preparation can make it efficient; a positive screen may still require substantial time. Ask “What has become harder since last year?” and clarify changes in walking, falls, hearing, memory, mood, medication use, and help at home.

Say: “Let’s decide what prevention is due and what will help you stay independent. I also want to understand the trouble you marked on the questionnaire.”

New falls, cognitive or functional decline, a concerning mood response, or an unsafe home situation needs triage today. Explain possible cost sharing if a separately identifiable problem service is added.

CMS: AWV components; Medicare: additional services and costs.

Low back pain: set a functional starting point

Ask and examine: onset, injury, leg symptoms, weakness, gait, and lower-extremity neurologic function. Ask specifically about new urinary retention or incontinence, bowel changes, and saddle sensory change. Review fever, infection or cancer risk, steroid exposure, and osteoporosis.

Say after a reassuring assessment: “Let’s work on getting you moving comfortably. Tell me what you cannot do now, so we can check whether the plan is helping.”

Emergency assessment: new bladder, bowel, or saddle symptoms with back/leg pain, or progressive weakness, raises concern for cauda equina or cord compression. Suspected infection, fracture, or cancer needs prompt directed evaluation. Other body regions have their own musculoskeletal visit guide.

NICE: low back pain; cauda equina referral.

When the first decision is the setting

Chest symptoms · Headache · Dizziness or fainting · Abdominal or pelvic pain

These complaints can have benign explanations. First establish whether the patient can safely remain in an outpatient pathway. A normal isolated test should not override a concerning story.

Chest symptoms or new breathlessness

Ask: symptoms now, onset, exertion, duration, radiation, sweating, syncope, palpitations, and clot risk. “What could you do two weeks ago that you cannot do now?” often reveals more than asking about pain alone.

Do: promptly assess stability, vital signs, oxygenation, heart and lungs. Obtain an ECG when indicated without delaying transfer. Suspected acute coronary syndrome or another life-threatening cause needs emergency evaluation and EMS transport. A single normal ECG does not exclude ACS; a routine outpatient troponin is not a safe way to defer a concerning evaluation.

Say when transfer is needed: “I’m concerned this could be a heart or lung problem that needs testing and treatment we cannot provide here. We’re arranging emergency transport.”

Next outpatient step: persistent stable chest symptoms need risk assessment and a testing decision, not an automatic stress test. The AHA/ACC stable-chest-pain pathways distinguish patients in whom testing can be deferred from those needing anatomic or functional evaluation. That pathway does not cover every cause of breathlessness. Set the required timing and result owner; if access is too slow for the concern, reconsider the setting.

AHA/ACC: chest pain assessment and office transfer.

A new or different headache

Ask: time to peak intensity, difference from prior headaches, neurologic or visual symptoms, fever, trauma, exertion or posture, pregnancy/postpartum status, cancer, immunosuppression, and anticoagulants. In an older adult, ask about jaw claudication and scalp tenderness.

Do: check blood pressure, mental status, neurologic examination, and relevant eye/temporal findings. Thunderclap onset, meningism, altered consciousness, acute neurologic deficit, or a painful red eye with visual change needs emergency evaluation. Suspected giant cell arteritis needs an urgent treatment and diagnostic pathway; visual symptoms demand immediate action. Pregnancy/postpartum headache warrants a lower threshold for urgent assessment.

Say: “The new features change what we need to check before treating this as your usual headache.” Once a primary headache pattern is established, use the NICE headache recommendations for acute treatment, medication overuse, and prevention. Imaging solely for reassurance is not routinely needed.

NICE: headache; ACOG: pregnancy and postpartum; NHS: giant cell arteritis.

Dizziness or fainting

Ask: reconstruct one episode: start, duration, trigger, symptoms between episodes, and actual loss of consciousness. Include exertion, palpitations, hearing change, headache, diplopia, weakness, and medication changes.

Do: examine gait and neurologic function and assess cardiovascular causes; use orthostatic measurements, glucose, and ECG according to the syndrome. Brief position-triggered episodes and continuous acute vertigo require different examinations. HINTS belongs to the appropriate acute vestibular syndrome in trained hands.

Transfer for immediate assessment: possible stroke, new neurologic findings, or inability to walk safely. Use a stroke pathway for unexplained acute vestibular syndrome when skilled assessment is unavailable. Exertional syncope, chest symptoms, abnormal ECG, or major cardiac disease warrants urgent evaluation.

Say: “Tell me what happened from the beginning of one spell until you felt normal again.” For brief head-movement-triggered vertigo, a trained clinician can use the Hallpike maneuver to assess BPPV. If confirmed, offer a canalith repositioning maneuver such as Epley in trained hands and without unstable cervical spine disease. Explain what new symptoms would require reassessment.

NICE: dizziness; transient loss of consciousness.

Abdominal or pelvic pain

Ask: location, migration, progression, meals, vomiting, stool and gas passage, bleeding, urinary symptoms, surgery, and medications. Establish pregnancy possibility and relevant gynecologic or testicular symptoms.

Do: assess stability, hydration, abdomen, and the additional examination suggested by the history. Test for pregnancy when possible. Concerning pain, bleeding, or syncope with a positive test needs prompt ectopic assessment, even without known risk factors.

Emergency evaluation: instability, peritoneal findings, major bleeding, severe progressive pain, suspected obstruction/ischemia, or inability to hydrate. Sudden testicular pain needs emergency torsion assessment.

Say when observation is supported: “The assessment today supports watching this closely. Early illness can change, so we need another examination if the pain continues.” Arrange a short-interval re-exam, often within 24–48 hours depending on the presentation, with earlier care for deterioration. Confirm where that examination will happen.

NICE: ectopic pregnancy; MedlinePlus: abdominal pain warning signs.

Problems that need another pass

Fatigue · Weight loss · Mood and safety · Memory and function

Here, more time often means reviewing the record, gathering another account, or making a plan that survives an unrevealing first test. Urgent findings still take priority.

Fatigue: use follow-up to test the explanation

Ask: “Sleepy, weak, short of breath, or exhausted?” Establish duration, sleep, mood, intake and food access, substance use, medications, and functional change. Verify weight measurements and whether loss was intentional. Ask about fever, sweats, bleeding, dysphagia, bowel changes, and localizing symptoms.

Say: “We may need more than one visit to explain this. Let’s choose the first tests from what you’ve told me and agree what we’ll do if they don’t answer the question.”

Testing principles: CDC: evaluation in suspected ME/CFS (a condition-specific resource, not a diagnosis for this case). The case’s two-week review is a teaching choice.

Unexplained weight loss: verify the trend and find a direction

First pass: compare dated weights, establish intentionality, and ask what changed in appetite, food access, chewing/swallowing, medicines, mood, and bowel symptoms. Examine for a localizing finding. Explain: “The weight change deserves an explanation even if the first blood tests are normal.”

Choose the next investigation from the accompanying finding: dysphagia leads to an esophageal/upper-GI assessment; bleeding or iron-deficiency anemia requires evaluation of its source; a mass or abnormal node directs imaging or tissue assessment. Use a symptom-specific pathway and arrange timely access. Continued unexplained loss without a localizing clue still needs an active diagnostic plan and repeat weight, rather than repeated screening panels.

NICE: suspected cancer, including updated weight-loss recommendations. This is a resource for concerning patterns, not an assumption that weight loss means cancer; UK referral thresholds and service arrangements differ from US practice.

Depression: make room for a direct conversation

Ask: mood, interest, function, sleep, substances, and prior mania or hypomania. Ask directly about suicide: thoughts now, intent, plans, access to lethal means, and previous attempts. Clarify an affirmative safety response regardless of the total screening score.

Say: “I’m glad you told me. Are you thinking about killing yourself right now?” Follow the answer with assessment, support, and a clear disposition.

Do: current suicidal thoughts require urgent evaluation and the patient must not be left alone; use emergency services for imminent danger. When outpatient care is appropriate, make a collaborative safety plan, address lethal means, and confirm access to further care. The NIMH pathway advises a check-in within 48 hours when feasible after a positive screen, and further evaluation preferably within 72 hours when needed.

Without an immediate safety concern, discuss prior treatment, preferences, adverse effects, and monitoring. A prescription, a therapy referral, and a follow-up appointment solve different parts of the problem; establish which are needed and obtainable.

NIMH: adult outpatient safety assessment and disposition.

Memory concerns: reconstruct daily life

Ask: onset and course, medication use, finances, missed appointments, driving, falls, hearing, mood, and daily activities. With permission, obtain an account from someone who knows the patient. “Paid the rent three times and ran out of medication” is more useful than “more forgetful.”

Say: “The memory test is one part of this. Let’s also work out what has changed at home and what help is needed now.”

Do: acute or fluctuating confusion needs prompt evaluation for delirium and its cause. Stable gradual decline allows a dedicated visit with collateral history, medication review, cognitive and functional assessment, and directed diagnostic testing. Before that visit, resolve immediate concerns about food, medication safety, wandering, driving, exploitation, or an overwhelmed caregiver.

NICE: delirium (hospital and long-term-care guidance); dementia assessment.

Prepare once, follow through

Staff can gather these items within their roles; patients can bring medicines and complete history forms. In a thinly staffed clinic, use the same short list for your own preparation and mark missing information to retrieve later. Efficiency comes from finding it once and making it available at the next decision.

When the agenda expands: “The new shortness of breath changes our priorities. Let’s address that first, then make a plan for the other items.” For a stable concern that needs a separate visit, establish that waiting is safe before scheduling it.

Document the findings actually obtained, your assessment, the remaining uncertainty, and the plan. End with “What will you do if this gets worse, and when are we checking back?” If the answer depends on an inaccessible portal or an unavailable appointment, arrange another way.

Practice the decision

These cases are fictional. Decide what you need to know next before opening the discussion.