既往歴

The Japanese word 既往歴 (きおうれき - Kiōreki) is a formal medical term that translates directly to "past medical history" or "anamnesis." In the hierarchy of Japanese vocabulary, this word sits firmly in the professional and administrative domain. While a layperson might say 「昔の病気」 (mukashi no byōki) when talking to a friend, a doctor, nurse, or insurance agent will invariably use 既往歴. It is a compound noun formed by three kanji: 既 (already/previously), 往 (go/past), and 歴 (history/record). Together, they describe the trajectory of a person's health leading up to the present moment.

Clinical Context

In a Japanese hospital (病院 - byōin) or clinic (クリニック - kurinikku), the first thing you are usually handed is a 問診票 (monshinhyō) or medical interview sheet. On this form, you will almost always see a section labeled 既往歴. This is where you list major illnesses, surgeries, or chronic conditions you have had in the past. It is distinct from your 現病歴 (genbyōreki), which refers to your current symptoms or the illness you are seeking treatment for today.

The usage of this word extends beyond the doctor's office. When applying for life insurance (生命保険 - seimei hoken) in Japan, the 既往歴 is a critical component of the risk assessment. If an applicant fails to disclose a significant 既往歴, it can lead to a 告知義務違反 (kokuji gimu ihan), or breach of the duty to disclose, which might void the policy. Therefore, the term carries significant legal and financial weight. Linguistically, the word is highly formal. Using it in a casual setting, like at a bar with friends, would sound overly clinical and stiff, much like saying "What is your previous clinical record?" instead of "Have you been sick before?"

Word Breakdown

The kanji 既 (Ki) means 'already' (as in 既に - sudeni). 往 (Ō) means 'going' or 'past' (as in 往復 - ōfuku, round trip). 歴 (Reki) means 'history' or 'curriculum' (as in 歴史 - rekishi). Together, they create a very precise image of 'the history of what has already gone by' in terms of health.

Furthermore, in specialized medical fields, you might hear the term 既往症 (kiōshō). While often used interchangeably with 既往歴, kiōshō specifically refers to the chronic diseases themselves, whereas kiōreki refers to the chronological record of those diseases. For a learner at the B1 level, mastering 既往歴 is essential for navigating the Japanese healthcare system safely. Understanding this word ensures that you can accurately communicate your health background, which is a fundamental aspect of patient safety. In the context of the JLPT, this word appears in N2 and N1 level materials, but its practical importance makes it a "must-know" for anyone living in Japan.

Using 既往歴 correctly involves understanding its grammatical role as a formal noun. It is typically used in the pattern [Disease Name] + の + 既往歴 or simply as a standalone category on a document. Because it is a formal term, it is frequently paired with humble or polite verbs when a healthcare professional is speaking to a patient.

Common Verb Pairings

1. 既往歴を確認する (To confirm past history)
2. 既往歴を聴取する (To take/record past history - clinical)
3. 既往歴がある (To have a past history)
4. 既往歴を申告する (To declare past history - for insurance)

When you are the patient, you might use it to describe yourself in a formal setting. For example, if you are at a new clinic, you might say: 「喘息の既往歴がありますが、現在は完治しています。」 (Zensoku no kiōreki ga arimasu ga, genzai wa kanchi shite imasu) - "I have a medical history of asthma, but it is currently fully recovered." This provides the doctor with crucial context. It is important to note that 既往歴 usually refers to major events: surgeries, hospitalizations, or chronic conditions that require long-term management. Minor colds or temporary stomach aches from three years ago are typically not included in a 既往歴.

In written Japanese, particularly in medical reports or insurance contracts, the word is often used to establish a timeline. You might see phrases like 「既往歴の有無」 (Presence or absence of past medical history). This is a standard check-box item. If you are translating or interpreting in a medical context, 既往歴 is the standard equivalent of "PMH" (Past Medical History) used in English-speaking medical environments. It is a sterile, objective term that removes the personal emotion from the illness, focusing instead on the clinical facts.

Finally, consider the nuances of the word 「歴」 (reki). This suffix is found in many words meaning 'history' or 'background,' such as 学歴 (gakureki - educational background) or 職歴 (shokureki - work history). Just as you wouldn't omit a job from your resume if it was significant, you shouldn't omit a major illness from your 既往歴. The word implies a professional record-keeping aspect that 病歴 (byōreki) alone sometimes lacks. While byōreki is also common, 既往歴 is the specific technical term preferred in modern Japanese electronic health records (EHR).

You will encounter 既往歴 in several key areas of Japanese life, primarily centered around health, safety, and legal administration. It is not a word of the streets, but a word of the institution. Understanding where it appears will help you prepare for these specific interactions.

1. Hospitals and Clinics (病院・クリニック)

This is the most common place. Nurses will ask you during the initial intake: 「これまでに大きな病気をしたことはありますか？既往歴を教えてください。」 (Have you had any major illnesses before? Please tell me your medical history.) Even if they use simpler Japanese first, the word 既往歴 will appear on the papers you sign.

2. Health Checkups (健康診断 - Kenkō Shindan)

In Japan, employees and students undergo annual health checkups. The questionnaire almost always includes a section for 既往歴. This is used to track long-term health trends and identify potential risks in the workplace or school environment.

Another common environment is the fitness center or gym. When you sign up for a membership, especially if you are over a certain age or want to work with a personal trainer, they will ask for your 既往歴. This is for liability reasons; they need to know if you have a history of heart issues or spinal injuries before they design a workout program for you. In this context, the word is used to ensure safety and prevent accidents during exercise.

Finally, you will hear this word in news reports or documentaries discussing public health or medical malpractice. For instance, if there is a discussion about a new drug's side effects, the reporter might say, 「特定の既往歴を持つ患者には注意が必要です」 (Caution is necessary for patients with a specific medical history). This demonstrates the word's utility in communicating complex medical information to the public in a concise, standardized manner. For a B1 learner, hearing 既往歴 should trigger a mental association with "official medical background," allowing you to follow the conversation even if you don't know the names of all the specific diseases mentioned.

When learning 既往歴, English speakers and other learners often run into a few specific pitfalls. These usually involve using the word in the wrong social context or confusing it with similar-sounding medical terms.

Mistake 1: Confusing with 'Present Illness' (現病歴)

The most common clinical mistake is mixing up 既往歴 (past) with 現病歴 (genbyōreki) (present). If a doctor asks for your 既往歴 and you start talking about the fever you have right now, you are answering the wrong question. Remember: 既 (Ki) means 'already/past'.

Another common error is using 既往歴 in casual conversation. As mentioned, it is a very formal term. If you are talking to a friend about your health, saying 「私の既往歴は...」 sounds like you are reading from a police report or a medical textbook. Instead, use 「昔、〜という病気をしたことがある」 (I once had a disease called...) or 「持病がある」 (I have a chronic condition). Using 既往歴 socially can make the atmosphere feel stiff and awkward.

Learners also sometimes struggle with the pronunciation, specifically the long 'o' sound in 往 (Ō). It is Ki-ō-reki, not Ki-o-reki. Getting the vowel length wrong can make it harder for native speakers to recognize the word, especially in a fast-paced medical environment. Additionally, don't confuse 既往歴 with 家族歴 (kazokureki), which means family medical history. While related, they are distinct sections on a medical form.

Mistake 2: Over-reporting

Sometimes learners feel they must report every single cold or scrape they've ever had. In the context of 既往歴, medical professionals are looking for significant events: chronic diseases (diabetes, hypertension), major surgeries, hospitalizations, and serious allergies. Listing a paper cut from 2012 is technically a history, but it's not what 既往歴 implies in a clinical sense.

Finally, be careful with the kanji. 既 looks similar to 即 (immediate), and 歴 is often confused with 暦 (calendar). While they share components, their meanings are entirely different. Writing 既往暦 (using the calendar kanji) is a common mistake even among some native speakers, but in a professional setting, the correct 歴 (history) is essential.

In Japanese, there are several ways to talk about medical history, each with a specific nuance. Understanding the differences between 既往歴 and its alternatives will help you choose the right word for the right situation.

既往歴 (Kiōreki) vs. 病歴 (Byōreki)

既往歴 is more technical and specifically refers to the list of past illnesses. 病歴 is a broader term that can include the entire history of a specific disease, including its current progression. 既往歴 is the standard term on forms, while 病歴 might be used in a medical case study or narrative.

既往歴 (Kiōreki) vs. 既往症 (Kiōshō)

既往歴 is the 'history' (the record), while 既往症 is the 'condition' (the disease itself). You 'have' a kiōshō, and you 'record' your kiōreki. In practice, they are often used interchangeably, but kiōshō is slightly more focused on the medical condition's nature.

持病 (Jibyō) is a word you will hear much more often in daily life. It refers to a condition you are currently living with and have had for a long time. While a 既往歴 can include things that are completely cured (like a broken bone ten years ago), 持病 implies an ongoing struggle. If you are talking to a neighbor about why you can't lift heavy boxes, you would use jibyō, not kiōreki.

Another related term is 家族歴 (Kazokureki), meaning family medical history. This is used to identify hereditary risks. Doctors will often ask for both: 「既往歴と家族歴を教えてください。」 This helps them form a complete picture of your health profile. Lastly, there is 受診歴 (Jushinreki), which refers to your history of visiting doctors or hospitals, regardless of whether a specific disease was diagnosed. This might be used when checking how often a patient seeks medical care.

For a B1 learner, the key is to recognize 既往歴 as the formal "anchor" word for all past medical discussions in an official capacity. While you might not use it every day, knowing it allows you to enter the Japanese medical system with confidence, knowing exactly what information is being requested of you.