Medical Japanese

Most Japanese courses stop at the language of daily life. Rikai Sensei’s Medical track teaches the language clinical work actually runs on — the register, the hierarchy, and the precise vocabulary a healthcare professional needs to be understood, trusted, and safe on a Japanese ward. It is original curriculum, built from the ground up for clinical communication and structured against Japan’s published syllabi for foreign healthcare-worker certification. You will not find it in a general textbook or a consumer language app.

Clinical Japanese is its own language

On a ward, how you say something carries as much weight as what you say. The same request is phrased one way to a patient, another to their family, another to a senior nurse, and another again to a physician — and choosing the wrong register isn’t just impolite, it can blur a handover or undercut your credibility at the exact moment precision matters most.

General Japanese courses don’t teach this, because daily-life Japanese doesn’t demand it. The Medical track is built entirely around it: the keigo hierarchy of the clinical workplace, the fixed phrasings of patient care, and the small wording choices where a wrong word leads to a wrong action.

The clinical ladder: M5 to M1

The Medical track is a deliberate progression that mirrors the JLPT ladder. Each rung has a clear job — a register to master, a band of clinical situations to handle, and a place on Japan’s certification pathway it prepares you for. M5 and M4 are available now. The higher rungs (M3–M1) are in active development and roll out to existing subscribers as they’re released. Each level builds on the last, so your clinical Japanese grows in step with your confidence on the floor.

M5 — Foundational clinical language (Available now)

What it means. The bedrock of safe clinical communication: the high-frequency vocabulary, the two registers Japanese healthcare splits along, and the protocols that keep a basic request from being misheard.
What’s taught. High-yield medical katakana; critical safety kanji and emergency signage; hospital and department navigation; body parts in both the wago register (for talking with patients) and the kango register (for documentation); vital-signs vocabulary and recording; basic positioning and wheelchair-transfer commands; permission-seeking and polite touch; dining and excretion assistance language; and the clarification protocols that prevent miscommunication before it happens.
Where it sits. Parallels JLPT N5. Establishes the register foundation underneath Japan’s care-worker entry gate — JFT-Basic (CEFR A2) or JLPT N4, plus the 介護日本語評価試験 (Nursing-Care Japanese test).

M4 — Ward & clinic communication (Available now)

What it means. The working language of a full shift: moving fluently between registers, handling the core activities of daily-living care, and reporting accurately to the team.
What’s taught. Register triangulation across patient, family, peer, and senior; the full activities-of-daily-living set — mobility and transfers (including 患側/健側 paralysis-side language), dietary care and swallowing safety, excretion support and its euphemism ladder, bathing and hygiene, clothing and dressing assistance; the pain matrix of onomatopoeia and somatic sensation; medication-safety and dosing language; the medical interview; floor-to-chart documentation; clinical keigo and therapeutic listening (aizuchi, ma); informed-consent language; shift handover (申し送り); and urgent advocacy and escalation (the two-challenge rule, chain-of-command reporting).
Where it sits. Parallels JLPT N4. Together, M5 and M4 cover the communication core of the SSW care-Japanese requirement — including the daily-living domains the official test emphasizes (dressing, mobility, transfers, bathing, elimination, meals, facility life) — at greater depth than the entry test itself demands.

M3 — Diagnostic reasoning & specialized communication (In development)

What it means. The step from carrying out care to reasoning about it and communicating it under real responsibility — deepening the interview, interpreting findings, and handling the sensitive, high-stakes conversations a shift demands.
What’s taught. The advanced medical interview (the funnel method, chief-complaint and present-illness elicitation, history-taking); the diagnostic pain interview and symptom-chronology language; vital-sign interpretation and abnormality reporting; drug-interaction, side-effect, treatment-explanation and informed-consent language; patient education and teach-back; full four-section SOAP notes, incident and near-miss (ヒヤリハット) reports, care-plan reading, and the SBAR telephone protocol; advanced multi-party keigo; and the demanding communication of family liaison, elderly-speech comprehension, mental-health support, dementia and end-of-life care, and conflict resolution — plus the first system-level vocabulary (the care-insurance landscape, care philosophy, and the ICF framework).
Where it sits. Parallels JLPT N3 — the level the year-two care-worker and EPA gates require.

M2 — Specialist & systems language (In development)

What it means. The dense specialist vocabulary and formal written register of the body, its diseases, the chart, and the institutions around care.
What’s taught. The organ systems end to end (cardiovascular, respiratory, digestive, nervous, musculoskeletal, urinary/reproductive/endocrine, and sensory/skin); the lay→clinical symptom lexicon, the major disease categories, and neurological, degenerative, and psychiatric conditions; disability classification and the ICF in depth; infection and antimicrobial literacy and advanced pharmacology; reading the medical chart (orders, abbreviations) and authoring narrative records, referral and discharge summaries, and care plans; formal documentary keigo; multi-professional conference communication and graduated bad-news disclosure; and patient rights, professional ethics, the long-term-care insurance system, and the demographics of a super-aging society.
Where it sits. Approaches JLPT N2 — the reading load of the 介護福祉士 (Certified Care Worker) national exam and the permanent-residency career pathway.

M1 — Advanced clinical mastery (In development)

What it means. Near-native command of clinical register: nuanced register triangulation, the full diagnostic-reasoning vocabulary of senior practice, and the precision the national nursing exam expects.
What’s taught. Advanced register and euphemism selection under pressure, comprehensive clinical reasoning language, and the high-register reading and listening demands of senior roles.
Where it sits. Approaches JLPT N1 — the territory of the 看護師国家試験 (National Nursing Examination).

How the tiers were designed

Built against Japan’s certification ladder

The rungs aren’t arbitrary. Each level is mapped to a real gate on Japan’s certification pathway for foreign healthcare workers — from the JFT-Basic and 介護日本語評価試験 entry tests, through the JLPT N4 and N3 thresholds the visa stages require, up to the 介護福祉士 and 看護師 national examinations. We build each level against the published study syllabi and term lists for that stage, so the language you learn is the language those gates actually test.

And we don’t just assume that alignment — we measure it. The curriculum’s vocabulary is checked term by term against the official Ministry of Health, Labour and Welfare (MHLW) study glossaries and the 介護の日本語 syllabus, so we can see exactly which of the language a given gate tests is covered, and close the gaps. This is a deliberate design alignment with the certification ladder — it focuses your study on what matters, rather than promising any particular exam result.

Pedagogy: register first, safety always

Every item is designed around two principles. Register first: because clinical Japanese lives or dies on who you’re speaking to, the curriculum teaches the keigo hierarchy and register-switching as the spine, not an afterthought. Safety always: the wording choices we drill are the ones where a wrong word leads to a wrong action — paralysis-side directions, dosing language, escalation phrasing. Vocabulary is introduced a few terms at a time through interleaved conversations, then rehearsed in task-based scenarios, so it’s encountered in context and used under realistic pressure rather than memorized in a list.

Original, sourced, and reviewed

The Medical track is original curriculum, not a repackaged word list. It’s built from Japan’s published clinical and care-Japanese sources and term lists, authored with AI assistance and reviewed by people for register accuracy and clinical plausibility. The defensibility of this track is its content: validated, safety-critical, register-accurate Japanese — not a generic “AI tutor.”

Why this matters

Japan’s healthcare and elder-care system depends increasingly on foreign professionals, and at every stage of that pathway, language certification is mandatory — there is no route through that doesn’t run on precise, register-correct clinical Japanese. General Japanese gets you to the door. This track is built to get you through the shift.

What you’ll learn

The Medical track teaches language patterns, motivated by the clinical situations that make them matter:

Register switching & the keigo hierarchy — moving fluently between patient, family, peer, senior, and physician registers within a single shift.
Handovers (申し送り) — the conventional structure and set phrasings of passing care from one shift to the next without losing information.
Documentation & SOAP encoding — turning what you observe into the written Japanese expected in clinical records.
Describing symptoms precisely — the onomatopoeia and qualifiers that distinguish ズキズキ from シクシク, and vital-signs and observation vocabulary stated unambiguously.
Reading what isn’t said — recognizing patient stoicism (我慢) and the indirect, euphemistic phrasings clinical Japanese uses around difficult topics.

Every item teaches Japanese — the words, registers, and patterns — using clinical scenes to show why the language matters. It does not teach clinical practice itself.

Practice on realistic tasks

Vocabulary lists don’t build fluency under pressure. The Medical track uses task-based scenarios — guided, pre-authored exchanges set on the ward, in the clinic, at the pharmacy, during triage, positioning, and consent — where you make the real language choices the situation calls for and get immediate, specific feedback. You rehearse the wording before you ever need it for real.

Who it’s for

Nurses, caregivers, and allied-health professionals working or training in Japan — and students preparing to. If your goal is to practice in a Japanese clinical setting, general Japanese gets you to the door; the Medical track gets you through the shift. It pairs naturally with the JLPT track: build your general foundation, layer the clinical language on top.

The same app, around the clinical core

The Medical track lives inside the same experience as the rest of Rikai Sensei: your choice of Express or Immersive depth, spaced-repetition review that schedules exactly what you need to revisit, accurate on-device furigana, and tap-to-define dictionary lookups on any sentence. The pedagogy you already trust, focused on the language that gets clinical work done.

Educational use only. The Medical track teaches clinical Japanese language, not clinical practice — see our Medical Disclaimer.