Which Department

Which department should I see for a lingering cough with shortness of breath?

2026-09-17 · Neutral information that names no hospital, doctor or region. No rankings, recommendations or reviews.

Short answer

Internal Medicine(내과) is generally the first department to see for a persistent cough combined with shortness of breath, as it covers a broad range of respiratory and systemic causes. Depending on initial findings, you may be referred to Pulmonology(호흡기내과) for lung-related conditions or Cardiology(심장내과) if a heart-related cause is suspected.

Which department

  1. 1Internal Medicine (내과)
    Internal medicine physicians are trained to evaluate overlapping symptoms involving multiple organ systems, including the lungs, heart, and airways. A lingering cough with shortness of breath often requires a broad initial assessment before pinpointing the cause, which is exactly what internal medicine handles. — First / second line: Starting at a local clinic (의원) level with an internal medicine doctor is generally appropriate as a first step. If the cause remains unclear or specialist care is needed, a referral to a more specialized department is common.
  2. 2Pulmonology (호흡기내과)
    Pulmonologists specialize in diseases of the lungs and airways, making this department relevant when the cough and breathlessness are suspected to be of respiratory origin. Conditions affecting airflow, lung tissue, or the airway are within this specialty's scope. — First / second line: You may be referred here from internal medicine if respiratory causes are suspected, or you can visit a hospital (병원) with a pulmonology department directly if symptoms have persisted for several weeks. A referral letter (진료의뢰서) is generally helpful when moving from a clinic to a larger hospital.
  3. 3Cardiology (심장내과)
    Shortness of breath accompanying a cough can sometimes originate from the heart rather than the lungs, as certain cardiac conditions can cause fluid accumulation or reduced oxygen delivery. Cardiologists assess whether the heart's pumping function or structure may be contributing to these symptoms. — First / second line: Cardiology is usually reached via referral from internal medicine or pulmonology when cardiac involvement is considered. If you have a known heart condition and these symptoms appear, consulting cardiology earlier may be appropriate.
  4. 4Otorhinolaryngology / ENT (이비인후과)
    When a lingering cough originates from the upper airway — such as from post-nasal drip, chronic throat irritation, or upper respiratory issues — an ENT specialist may be the appropriate consultant. ENT is particularly relevant if the cough is accompanied by nasal congestion, throat discomfort, or voice changes. — First / second line: ENT clinics are widely available at the primary care (의원) level and can be visited directly if upper airway symptoms are prominent. Internal medicine may also suggest an ENT consultation as part of a broader evaluation.

Go to the ER / call 119 if

If any of the following applies, do not choose a department — go to an emergency room or call 119 (Korea's emergency number).

  • Sudden severe shortness of breath that comes on rapidly and makes it difficult to speak or move normally.
  • Coughing up blood or a significant amount of blood-tinged sputum.
  • Chest pain or pressure accompanying the cough and breathlessness.
  • Lips, fingertips, or face turning blue or grayish in color.
  • Loss of consciousness, extreme confusion, or inability to stay awake during a coughing episode.

Before your visit

  • Note when the cough first started and whether it has been getting worse, staying the same, or improving over time.
  • Observe what makes the shortness of breath worse — for example, lying down, physical activity, or exposure to cold air or certain environments.
  • Track any additional symptoms such as fever, night sweats, unintentional weight loss, swollen legs, or wheezing.
  • Prepare a list of any medications, supplements, or herbal remedies you are currently taking, as some can contribute to coughing.
  • Bring records of any previous chest X-rays, lung function tests, or allergy evaluations if you have them.
  • Be ready to describe your occupation, living environment, and any history of smoking or exposure to dust, chemicals, or animals.

General principles

A cough lasting more than three weeks is generally considered 「chronic」 and warrants a medical evaluation, especially when shortness of breath is also present. In Korean medical practice, the evaluation typically begins at the primary care level (의원), where a broad assessment helps determine whether specialist referral is needed. This step-by-step approach aligns with the national health insurance system (건강보험), which legally requires a referral letter only when moving to a tertiary hospital (상급종합병원), though starting at a lower level and moving up as needed remains common practice.

The combination of persistent cough and shortness of breath can arise from a wide range of causes involving the respiratory system, cardiovascular system, or upper airway, which is why multiple departments may be involved at different stages. Pulmonology and cardiology often work in parallel when both lung and heart causes need to be ruled out, and the referring physician coordinates which specialist is seen first based on the overall clinical picture.

General diagnostic approaches for these symptoms at a clinic or hospital level commonly involve listening to breathing sounds, reviewing symptom history, and may progress to imaging or breathing tests — all of which a consulting physician will decide upon based on individual presentation. The role of each test is to help narrow down possible causes rather than to confirm a diagnosis immediately, so multiple visits or referrals are a normal part of the process.

FAQ

Should I go to a local clinic (의원) or a larger hospital (병원) first?

In general, starting at a local internal medicine clinic is a practical first step for a lingering cough with shortness of breath, unless symptoms are severe or rapidly worsening. If the clinic physician determines that further evaluation is needed, they will typically issue a referral letter for a hospital with specialist departments. Going directly to a secondary hospital (병원/종합병원) without a referral is possible with normal insurance coverage, while visiting a tertiary hospital (상급종합병원) without one may involve higher out-of-pocket costs under the Korean health insurance system.

How do I know if my cough is a lung issue or a heart issue?

Distinguishing between respiratory and cardiac causes of cough and breathlessness generally requires a clinical assessment — it is not possible to tell from symptoms alone, and even physicians use tests to help differentiate. Both pulmonology and cardiology may be involved in the evaluation process, often guided by an internal medicine physician's initial findings. This is why starting with internal medicine is commonly recommended before assuming a specific organ is involved.

Are there different considerations for children or elderly patients with these symptoms?

For children, Pediatrics(소아청과) is generally the first point of contact, as pediatric specialists are trained to evaluate respiratory and cardiac symptoms in younger age groups. For elderly patients, the evaluation may be more complex because multiple conditions can coexist, and internal medicine or geriatric-focused clinics often take a broader approach. In both groups, a lingering cough with shortness of breath is taken seriously and warrants timely medical consultation.

What kinds of tests are generally done for a persistent cough with shortness of breath?

The specific tests ordered depend entirely on what the consulting physician finds during the initial assessment, so this varies from person to person. In general medical practice, evaluations for these symptoms may involve listening to the lungs and heart, reviewing breathing patterns, and potentially imaging or airflow measurements — but the decision on what is appropriate rests with the physician. Bringing previous test results to the appointment can help avoid unnecessary repetition.

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This page is general medical information and does not replace diagnosis, treatment or choosing a clinic. Consult a doctor for any symptom. In an emergency, go to the ER or call 119 immediately.