noun
ringworm; tinea corporis
A fungal skin infection causing a ring-shaped rash; commonly referred to as ringworm of the body. In everyday Japanese, the kana form たむし is standard.
夏になると、たむしができやすい。
I tend to get ringworm in the summer.
たむしの治療には抗真菌薬を使います。
Antifungal medication is used to treat ringworm.
The origin is uncertain; the kanji 田虫 (rice field insect) may reflect a folk belief linking the condition to insects in wet fields, but this is speculative.