What are the most common primary care and urgent care diagnoses?

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Last updated: August 20, 2025View editorial policy

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Most Common Primary Care and Urgent Care Diagnoses

The most common diagnoses in primary care and urgent care settings include upper respiratory tract infections, hypertension, routine health maintenance, arthritis, diabetes, depression/anxiety, pneumonia, acute otitis media, back pain, and dermatitis, with significant variations between clinician-reported and patient-reported conditions. 1

Primary Care Diagnoses by Frequency

Top 10 Clinician-Reported Diagnoses:

  1. Upper respiratory tract infections
  2. Hypertension
  3. Routine health maintenance
  4. Arthritis
  5. Diabetes
  6. Depression or anxiety
  7. Pneumonia
  8. Acute otitis media
  9. Back pain
  10. Dermatitis

Top 10 Patient-Reported Reasons for Visits:

  • Cough
  • Back pain
  • Abdominal symptoms
  • Pharyngitis
  • Dermatitis
  • Fever
  • Headache
  • Leg symptoms
  • Unspecified respiratory concerns
  • Fatigue

Geographical Variations in Diagnoses

There are notable differences in common diagnoses between developed and developing countries 1:

Developed Countries:

  • Depression/anxiety and back pain are more prevalent after respiratory infections and hypertension

Developing Countries:

  • Pneumonia and tuberculosis are more common after respiratory infections and hypertension

Acute Respiratory Conditions

Acute respiratory tract infections represent a substantial portion of primary care visits, with approximately 545 per 10,000 patient-years consulting their primary care physician for these conditions 2. In the USA, acute rhinosinusitis specifically accounts for approximately 19.4 visits per 1,000 adults annually 2.

  • Common cold symptoms typically include:

    • Nasal discharge
    • Cough
    • Headache
    • Fever
    • Nasal obstruction
  • Acute rhinosinusitis is often overdiagnosed, with up to 60% of patients receiving antibiotics on day 1 despite limited evidence supporting early antibiotic use 2.

Dermatological Conditions

Actinic keratosis (AK) represents a common dermatological condition seen in primary care 2. Management approaches include:

  • No treatment for mild cases
  • Topical therapies for field treatment (treating wider areas)
  • Focal destructive therapies (cryotherapy, curettage) for individual lesions
  • Referral criteria for specialist care include:
    • AK failing to respond to standard treatments
    • Multiple or relapsing AKs
    • AK in immunosuppressed patients
    • Lesions with concerning features (bleeding, pain, thickening)

Mental Health and Behavioral Conditions

Somatic symptom disorders are common in primary care, accounting for 10-15% of adult primary care visits 2. Among children and adolescents:

  • Recurrent abdominal pain accounts for 5% of pediatric office visits
  • Headaches account for 20-55% of pediatric office visits
  • 10% of adolescents report frequent somatic symptoms

Hospital-Acquired Conditions

While not typical primary care diagnoses, hospital-acquired pneumonia (HAP) is an important condition that primary care providers may need to follow up on after hospital discharge 3. Key considerations include:

  • Develops ≥48 hours after hospital admission
  • Common pathogens include Streptococcus pneumoniae, Pseudomonas aeruginosa, and Legionella pneumophila
  • Patients with COPD have higher risk of complications
  • Early recognition and appropriate antibiotic therapy are crucial

Patient Complexity Factors

Medical complexity is increasingly recognized as an important consideration in primary care 4. Factors contributing to patient complexity include:

  • Multiple diagnoses
  • Mental health issues
  • Lack of effective participation in care plans
  • Insurance and access issues

Clinical Implications

Understanding the most common diagnoses in primary care and urgent care settings has important implications for:

  1. Resource allocation and planning
  2. Development of clinical guidelines
  3. Design of training programs and curricula
  4. Improving diagnostic communication

It's worth noting that only about 53% of treated conditions in primary care are associated with a clear diagnostic moment, with physicians presenting 66% of diagnoses as hedged or uncertain 5. This highlights the complex nature of diagnosis in primary care settings.

When patients seek care, they often want more than just a diagnosis - they want an explanation for symptoms, treatment guidance, and clear communication about testing and management 6. Addressing these underlying needs can lead to more effective transitions and improved patient outcomes.

AI-generated content. Review and edit as needed.

References

Research

What are the most common conditions in primary care? Systematic review.

Canadian family physician Medecin de famille canadien, 2018

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Guideline

Hospital-Acquired Pneumonia (HAP) Management

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Research

Patient care complexity as perceived by primary care physicians.

Families, systems & health : the journal of collaborative family healthcare, 2015

Research

The diagnostic moment: A study in US primary care.

Social science & medicine (1982), 2019

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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