Which department should I see for difficulty falling asleep or staying asleep?

Name: Which department should I see for difficulty falling asleep or staying asleep?
Creator: Which Department
Published: 2026-09-17

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

Short answer

Psychiatry(정신건강의학과) is generally the first department to see for sleep difficulties such as trouble falling asleep or frequent waking, as these symptoms are often linked to stress, anxiety, or mood-related conditions. If a physical cause such as sleep apnea or a neurological condition is suspected, Neurology(신경과) or a sleep-specialized clinic within an internal medicine department may also be involved. In practice, starting at a primary-care internal medicine clinic(내과 의원) is another common first step before a referral is made.

Which department

1Psychiatry (정신건강의학과)
Psychiatry handles sleep disorders when they are associated with psychological factors such as anxiety, depression, stress, or circadian rhythm disturbances, which are among the most common underlying causes of insomnia. This department evaluates both the mental health context and the sleep pattern together. — First / second line: A primary-care psychiatry clinic(정신건강의학과 의원) can generally be visited directly without a referral. If symptoms are complex or long-standing, a referral to a hospital-level sleep center within psychiatry may follow.
2Neurology (신경과)
Neurology addresses sleep problems that may originate from neurological conditions, such as restless legs syndrome, periodic limb movement disorder, or other brain-related causes affecting sleep architecture. Neurologists may also coordinate polysomnography (sleep study) evaluation in a hospital setting. — First / second line: If a neurological cause is suspected — for example, unusual movements during sleep or accompanying neurological symptoms — a neurology clinic(신경과 의원) can be visited first, or a referral may be issued from another primary-care department.
3Internal Medicine / Family Medicine (내과 / 가정의학과)
Internal medicine or family medicine clinics often serve as the practical first point of contact for sleep complaints, as they can screen for physical causes such as thyroid disorders, chronic pain, or cardiovascular conditions that commonly disrupt sleep. They also coordinate referrals to more specialized departments. — First / second line: Visiting a local primary-care clinic(내과 의원 or 가정의학과 의원) first is a common and practical approach in the Korean healthcare system, especially when the cause is unclear. A referral letter(진료의뢰서) can then be issued if a specialist visit is needed.
4Otolaryngology / ENT (이비인후과)
Otolaryngology may be involved when sleep disruption is related to snoring or suspected sleep apnea caused by structural issues in the upper airway, such as nasal obstruction or enlarged tonsils. This department typically works alongside neurology or pulmonology in a multidisciplinary sleep evaluation. — First / second line: ENT is generally not the first stop for general insomnia, but becomes relevant when a bed partner reports loud snoring, gasping, or witnessed breathing pauses during sleep, which may prompt a referral from another department.

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 confusion, disorientation, or inability to recognize familiar people after a sleepless episode — go to the emergency room rather than choosing a department.
Chest pain, pounding heartbeat, or difficulty breathing that wakes you from sleep — seek emergency care immediately.
Witnessed episodes where breathing completely stops for an extended period during sleep, accompanied by gasping or choking upon waking.
New or worsening weakness, numbness, or slurred speech occurring around the time of sleep disturbances — call 119 or go to the ER.
Severe psychological distress, thoughts of self-harm, or inability to function in daily life due to sleep deprivation — emergency psychiatric evaluation may be needed.

Before your visit

Note how long you have had sleep difficulties and whether the problem is mainly falling asleep, staying asleep, or waking too early.
Keep a brief sleep diary for a few days if possible, recording bedtime, wake time, number of awakenings, and how rested you feel in the morning.
List any medications, supplements, or caffeinated products you currently use, as these can directly affect sleep quality.
Think about whether any specific life events, stressors, or changes in routine coincided with the start of your sleep problems.
Note any other symptoms that accompany poor sleep, such as snoring, mood changes, daytime fatigue, headaches, or physical pain.
If you have had any previous medical evaluations or laboratory tests related to sleep or related conditions, bring those results or records with you.

General principles

Difficulty falling or staying asleep — commonly referred to as insomnia — is a symptom that can arise from a wide range of causes, including psychological factors, underlying medical conditions, lifestyle habits, medications, or primary sleep disorders. Because the potential causes overlap across several medical fields, the appropriate department depends on what other symptoms accompany the sleep problem and how the overall clinical picture looks.

In the Korean healthcare system, general practice is to start at a primary-care clinic(의원) before moving to a hospital-level specialist if needed. A doctor at a primary-care clinic can perform an initial assessment, order basic screening tests, and issue a referral letter(진료의뢰서) if a tertiary hospital(상급종합병원) referral is required for insurance purposes. Secondary hospitals(병원/종합병원) can typically be visited directly with standard National Health Insurance(건강보험) coverage, without a referral being necessary.

When a more detailed evaluation is needed — for example, to rule out sleep apnea or a neurological sleep disorder — a sleep study (polysomnography) conducted at a hospital sleep center may be discussed by the treating physician. This is generally arranged after an initial consultation rather than something a patient schedules independently.

Sleep difficulties in older adults or in children may present differently and may involve different underlying causes compared to working-age adults, which is one reason why mentioning the patient's age and full symptom history at the first consultation is important for the doctor to determine the right evaluation pathway.

FAQ

Should I go to a clinic (의원) or a hospital (병원) first for sleep problems?

In general, starting at a primary-care clinic is the standard first step in Korea for non-emergency sleep complaints. If the clinic doctor determines that a more specialized evaluation or equipment — such as a sleep study — is needed, they can issue a referral letter to a hospital-level department. Going directly to a large tertiary hospital without a referral may affect insurance coverage, while secondary-level hospitals can generally be visited directly without a referral under normal insurance coverage.

How is sleep-related psychiatry different from neurology for this symptom?

Psychiatry focuses on sleep problems driven by emotional or psychological factors such as anxiety, depression, or chronic stress, and evaluates the mental health context alongside the sleep complaint. Neurology focuses on sleep disorders that have a brain or nervous system basis, such as restless legs syndrome or parasomnias, and may use specialized tests to assess sleep architecture. A doctor at your first appointment can help determine which direction is more appropriate based on your specific symptoms.

What kind of tests are generally done for sleep difficulties?

Initial evaluation typically involves a clinical interview about sleep habits, medical history, and associated symptoms, and may include basic laboratory tests to check for conditions such as thyroid dysfunction or anemia. If a primary sleep disorder is suspected, a physician may later discuss a sleep study (polysomnography) conducted at a hospital. The specific tests considered appropriate for any individual are determined by the treating physician based on the full clinical picture.

Are sleep issues evaluated differently for children or elderly patients in Korea?

Yes, the age of the patient generally influences which department is most relevant and what causes are prioritized. For children, a pediatrician(소아청소년과) is usually the first point of contact, who may then refer to a relevant specialist. For elderly patients, the range of possible underlying causes is broader — including medication side effects, chronic illness, and cognitive changes — and a family medicine or internal medicine clinic often serves as the starting point. Discussing the patient's full medical background with the doctor at the first visit is especially important in these age groups.

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.