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日射病

nisshabyō
heatstroke

日射病にかかってしまった。

I got heatstroke.


Medicine
Medical

A form of heat illness caused by prolonged exposure to direct sunlight, leading to symptoms such as headache, dizziness, nausea, and in severe cases, loss of consciousness.

夏の暑い日に外で作業をしていたら、日射病にかかってしまった。

I was working outside on a hot summer day and got heatstroke.

日射病の症状には、頭痛、めまい、吐き気などがあります。

Symptoms of heatstroke include headache, dizziness, and nausea.

Distinct from '熱中症' (heatstroke from general overheating), '日射病' specifically refers to heat illness caused by direct sunlight exposure.

Collocations

日射病にかかるto get heatstroke日射病の症状symptoms of heatstroke日射病を防ぐto prevent heatstroke

Synonyms

熱中症中暑

Pro Tip

Distinguishing 日射病 from 熱中症

'日射病' refers specifically to heat illness caused by direct sunlight exposure, while '熱中症' (netchūshō) is a broader term for heat-related illnesses, including those from high temperatures without direct sunlight.

Gold Rule

Prevention in hot weather

To avoid 日射病, stay hydrated, wear a hat, use sunscreen, and take breaks in the shade during peak sunlight hours.

Word Origin

Composed of '日射' (nissha, 'sun exposure') and '病' (byō, 'illness'), literally meaning 'sun exposure illness.' The term reflects the direct cause of the condition.

Usage Notes

Often used in medical or safety contexts to describe heat illness specifically from sunlight. In casual conversation, '熱中症' (general heatstroke) is more commonly used.

Word Breakdown

日
sun
root
+
射
exposure / shooting
root
+
病
illness
root
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Words of the Year

The most notable words that defined each year. Discover the vocabulary that shaped our world.