1.
rash; skin eruption; exanthema
An outbreak of spots, redness, or irritation on the skin, typically caused by allergies, infections, or other medical conditions.
腕に発疹が出た。
A rash appeared on my arm.
薬のアレルギーで発疹が出ることがある。
A rash can appear due to a drug allergy.
全身に赤い発疹が広がったので、すぐに病院に行った。
Red rashes spread all over my body, so I went to the hospital immediately.
A medical term composed of 発 (outbreak, occurrence) and 疹 (rash). The standard word for skin rashes in both medical and everyday contexts.
READING NOTE:
The reading はっしん is standard. An older reading ほっしん also exists but is less common today. Be careful not to confuse with the homophone 発信 (sending, transmitting).
COMMON COLLOCATIONS:
- 発疹が出る — a rash appears
- 発疹が広がる — a rash spreads
- 発疹が引く — a rash subsides
- アレルギー性発疹 — allergic rash
SIMILAR WORDS:
- 湿疹 — eczema, dermatitis (chronic or recurring skin condition)
- 蕁麻疹 — hives, urticaria (raised itchy welts)
- かぶれ — rash from contact irritation (more casual)