Which department should I see for feeling depressed and lethargic?

Name: Which department should I see for feeling depressed and lethargic?
Creator: Which Department
Published: 2026-09-16

2026-09-16 · Neutral information that names no hospital, doctor or region. No rankings, recommendations or reviews.

Short answer

Psychiatry(정신건강의학과) is generally the first department that handles persistent low mood and lethargy. If a physical cause such as thyroid dysfunction or anemia is suspected, Internal Medicine(내과) may also be involved. A doctor will determine whether the symptoms stem from a mental health condition, a physical condition, or a combination of both.

Which department

1Psychiatry(정신건강의학과)
This department specializes in mood disorders, emotional regulation, and related conditions that commonly present as persistent sadness, loss of motivation, and low energy. Psychiatrists are trained to assess the psychological and neurological dimensions of depressive and lethargic symptoms. — First / second line: In general, you can start at a psychiatric clinic(정신건강의학과 의원) as a first-step visit. A referral to a larger hospital-based psychiatry department is typically arranged when symptoms are severe, long-lasting, or require more comprehensive evaluation.
2Internal Medicine(내과)
Lethargy and low mood can sometimes be associated with underlying physical conditions such as thyroid disorders, anemia, or vitamin deficiencies, all of which fall within the scope of internal medicine. An internist can order general blood work to rule out organic causes before or alongside a psychiatric assessment. — First / second line: Starting at a local internal medicine clinic is reasonable if you are unsure whether the symptoms have a physical basis, particularly if you also notice weight changes, cold intolerance, or unusual fatigue. If no physical cause is found, the internist will generally suggest a referral to psychiatry.
3Family Medicine(가정의학과)
Family medicine physicians provide broad primary care and are accustomed to evaluating both physical and emotional complaints together. They can conduct an initial screening for depression, assess overall health, and coordinate referrals to the appropriate specialist. — First / second line: A family medicine clinic is a practical first stop if you want a general assessment before committing to a specific specialty. From there, referral to psychiatry or internal medicine is arranged based on clinical findings.

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).

You are having thoughts of harming yourself or ending your life — go to the emergency room or call 119 immediately rather than scheduling a regular appointment.
You have completely stopped eating or drinking for an extended period and feel physically unable to function at a basic level.
You are experiencing confusion, disorientation, or an inability to recognize familiar people or surroundings alongside the low mood.
You have fainted, lost consciousness, or had a sudden episode of extreme physical weakness together with the depressed feeling.
Someone around you reports that you have become unresponsive, are not reacting to their voice, or cannot be roused normally.

Before your visit

Note approximately when the low mood and lethargy began — whether it was gradual or sudden, and whether anything significant happened around that time.
Keep a brief record of how your sleep, appetite, and daily energy levels have changed compared to your usual baseline.
List any other physical symptoms you have noticed, such as hair loss, weight change, unusual cold sensitivity, or heart palpitations, as these may point toward a physical cause.
Bring a list of all medications, supplements, and herbal products you are currently taking, including dosages if known, since some substances can affect mood and energy.
If you have had any previous blood tests or medical examinations relevant to this issue, bring the results or a summary so the doctor can refer to them.
Think about whether the symptoms are constant throughout the day or tend to be worse at a particular time, such as mornings or evenings, as this pattern is clinically useful information.

General principles

Depressed mood and lethargy are symptoms that can arise from purely psychological causes, purely physical causes, or an interaction between the two. Because of this overlap, the standard approach in Korean outpatient care is to first clarify whether an organic condition is present — through basic screening — and then to assess the mental health dimension in parallel or sequentially.

Psychiatry is generally considered the primary specialty for persistent low mood because it has the diagnostic framework and treatment approaches specifically designed for mood-related conditions. However, internal medicine or family medicine often plays a complementary role in the early evaluation phase, particularly when physical symptoms are prominent alongside the emotional ones.

In the Korean healthcare system, it is generally possible to visit a psychiatric clinic directly without a referral for an initial consultation. If the clinician determines that hospital-level care or multidisciplinary evaluation is needed, a formal referral document(진료의뢰서) is usually provided to facilitate access to a secondary or tertiary institution under the national health insurance(건강보험) framework.

The role of an initial clinical interview in psychiatry is to map the duration, severity, and functional impact of symptoms rather than to assign a label immediately. Physical examination findings and any laboratory results from internal medicine are typically considered together with the psychiatric assessment to form an overall picture.

FAQ

Should I go to a local clinic or a general hospital for depression and lethargy?

In general, starting at a local psychiatric clinic or family medicine clinic is the recommended first step in the Korean healthcare system, as clinics handle the majority of outpatient mental health assessments. Referral to a general hospital psychiatry department is typically arranged when the condition is assessed as requiring more intensive evaluation or when outpatient clinic-level care has been insufficient.

How is depression different from simple tiredness, and does that change which department I visit?

Simple short-term tiredness that resolves with rest is generally evaluated differently from persistent low mood accompanied by loss of interest, changes in sleep and appetite, or difficulty functioning — the latter pattern is more typically assessed by psychiatry. If the primary complaint is physical exhaustion with no clear emotional component, internal medicine is often the starting point to check for physical causes. A doctor will help determine which pattern applies and guide you to the right department.

Can thyroid problems cause the same symptoms as depression?

Thyroid dysfunction is one of the physical conditions that can produce symptoms closely resembling depression, including fatigue, low motivation, and mood changes, which is why internal medicine evaluation is sometimes included in the workup. A blood test assessing thyroid function is a common part of the general screening process when these symptoms are present. The decision to order such tests and interpret the results is made by the attending physician based on your full clinical picture.

Is there anything different about seeing a psychiatrist in Korea if I do not speak Korean well?

Some psychiatric clinics and hospital departments in Korea have staff with English proficiency, and it is generally advisable to call ahead to confirm language availability before your visit. Bringing a written summary of your symptoms and medical history in Korean — prepared with the help of a translation tool or a bilingual friend — can significantly improve the quality of the consultation. The Korean government's 1339 health helpline also provides basic multilingual support for navigating the healthcare system.

Find a clinic (external directories)

External directories for finding a clinic by region once you know the department (public data, no rankings or recommendations).

Hospital directory by region (koreahospital.org)

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.