Urgent Care · Common Complaints
Urinary Symptoms
Most urinary symptoms seen in urgent care are uncomplicated cystitis. The job is spotting pyelonephritis, urinary retention, and urosepsis — and not treating asymptomatic bacteriuria. This page covers the can't-miss diagnoses (pyelonephritis, urosepsis, acute urinary retention, obstructing kidney stone with infection, STI mimicking UTI, pregnancy-related complications, prostatitis), red flags including fever, rigors, flank/CVA pain, hemodynamic instability, immunocompromise, the minimum safe first-pass workup (UA with reflex culture, post-void residual when retention suspected, pregnancy test, BMP if pyelo), evidence-based antibiotic selection (nitrofurantoin, fosfomycin, TMP-SMX, fluoroquinolone reserve), avoiding overtreatment of asymptomatic bacteriuria in older adults, escalation criteria, documentation, and return precautions. Written for NPs, PAs, and MDs in outpatient practice.
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Urgent Care · Common Complaints
Urinary Symptoms
Why this symptom matters
Most are uncomplicated cystitis. The job is spotting pyelonephritis, urinary retention, and urosepsis — and not treating asymptomatic bacteriuria.
What must I not miss first?
- Pyelonephritis
- Urosepsis
- Acute urinary retention
- Obstructing kidney stone with infection
- STI mimicking UTI
- Pregnancy-related complications
- Prostatitis
Red flags — escalate or work up urgently
- Fever, rigors, flank/CVA pain
- Hypotension, tachycardia, AMS
- Pregnancy
- Inability to urinate with severe suprapubic pain
- Immunocompromise, recent instrumentation, indwelling catheter
- Hematuria with severe pain or anticoagulation
Immediate Management — While You Work It Up
- Urine dip and culture — collect before giving any antibiotics. Culture is required for older adults, men, and recurrent infections.
- Nitrofurantoin 100 mg BID × 5 days — uncomplicated cystitis in non-pregnant adult. Hold if CrCl < 30 or in older adults with renal impairment — check renal function first.
- Trimethoprim-sulfamethoxazole 160/800 mg BID × 3 days — alternative if local resistance patterns allow. Check allergy history.
- Ceftriaxone 1 g IM — if pyelonephritis is suspected and outpatient management is appropriate. Confirm allergy history first.
- Phenazopyridine 200 mg TID × 2 days — for dysuria symptom relief only. Warn patient it turns urine orange and does not treat the infection.
- Do not treat asymptomatic bacteriuria in older adults — a positive urine culture without symptoms does not require antibiotics. This is one of the most common and consequential mistakes in outpatient geriatric care.
Minimum safe first-pass workup
- What to ask: dysuria, frequency, urgency, hematuria, flank pain, fever, prior UTIs, sexual history, last menstrual period, pregnancy, recent instrumentation
- What to examine: vitals, abdominal exam, CVA tenderness, suprapubic exam, GU exam if STI suspected, prostate exam if male with pelvic/perineal pain
- UA with reflex culture for any complicated case (men, pregnancy, recurrent, immunocompromised)
- Pregnancy test in any reproductive-age person
- Bladder scan if retention suspected
What can usually be managed outpatient
- Uncomplicated cystitis in non-pregnant adult: nitrofurantoin 100 mg BID × 5 d, TMP-SMX × 3 d, or fosfomycin 3 g once
- Uncomplicated cystitis in male: longer course (7–14 d) with culture
- STI workup and empiric treatment per CDC guidance when appropriate
- Uncomplicated catheter-associated UTI with symptomatic patient — change catheter and treat
When to escalate to ED / higher level of care
- Pyelonephritis with sepsis criteria, hypotension, or inability to tolerate PO
- Urosepsis
- Obstructing stone with infection (urologic emergency)
- Acute urinary retention not relieved by catheterization or causing severe pain
- Pregnancy with pyelo or any concerning features
- Immunocompromised, transplant, or post-instrumentation patient with concerning features
What to document when the diagnosis is still uncertain
- Specific symptoms, duration, presence/absence of flank pain, fever, hematuria
- Pregnancy test result
- "Pyelo / urosepsis / retention / obstructing stone / STI considered because… ruled out because…"
- Antibiotic choice and rationale (avoid unnecessary fluoroquinolones)
- Return precautions and follow-up
Safety-net & return precautions to give
- Return or call 911 for fever, chills, back/side pain, vomiting, confusion, blood in urine with severe pain, or inability to urinate.
- Hydrate well. Finish entire antibiotic course. Avoid sex until symptoms resolve.
- Follow up with PCP if symptoms persist beyond 48–72 hours of antibiotics.
Educational guidance for clinicians. Not a substitute for clinical judgment. Always individualize to the patient and your local resources.
Evidence sources
- · IDSA UTI Guidelines
- · AUA/SUFU guidance
Review status
Last reviewed: 2026-04
Reviewed by the MyClinicianGuide editorial team. Cadence: annual.
Educational reference for licensed clinicians (NP, PA, MD, DO). Not a substitute for clinical judgment, institutional protocols, or specialty consultation. Apply in context of the full clinical picture, patient goals, and current standards of care. See About AI guidance for AI-related limitations.
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