Japanese Vocabulary: Illness

1. 病気 (byouki): Illness
2. 症状 (shoujou): Symptoms
3. 発熱する (hatsunetsu suru): Fever
4. 咳 (seki): Cough
5. 鼻水 (hanamizu): Runny nose
6. 喉の痛み (nodo no itami): Sore throat
7. 頭痛 (zutsuu): Headache
8. 腹痛 (fukutsuu): Stomachache
9. 吐き気 (hakike): Nausea
10. 下痢 (geri): Diarrhea
11. 嘔吐 (outo): Vomiting
12. 傷 (kizu): Wound
13. 手術 (shujutsu): Surgery
14. 病院 (byouin): Hospital
15. 医師 (ishi): Doctor
16. 看護師 (kangoshi): Nurse
17. 診察室 (shinsatsu-shitsu): Examination room
18. 薬 (kusuri): Medicine
19. 処方箋 (shohousen): Prescription
20. 予防接種 (yobou sesshu): Vaccination
21. 疾患 (shikkan): Disease
22. 予後 (yogo): Prognosis
23. 感染症 (kansen-shou): Infectious disease
24. 免疫力 (meneki-ryoku): Immune system
25. 予防 (yobou): Prevention
26. 隔離 (kakuri): Isolation
27. 体温計 (taion-kei): Thermometer
28. 血圧計 (ketsuatsu-kei): Blood pressure monitor
29. 睡眠不足 (suimin-fusoku): Sleep deprivation
30. ストレス (sutoresu): Stress
31. 健康診断 (kenkou-shindan): Health check-up
32. 予約 (yoyaku): Appointment
33. 医療保険 (iryou-hoken): Health insurance
34. 保健所 (hokenjo): Public health center
35. 適応症 (tekio-shou): Indications

In addition, there are many other words related to diseases such as patients, tests, treatments, specific symptoms of each disease and more. This vocabulary will help you understand and use disease-related terms in Japanese. However, if you have a health problem, always seek professional medical advice and care from a doctor or medical staff.