One of my feet is itchy. I wonder if I have athlete's foot.
I have an itchy foot. I think it could be athlete's foot.
ーOne of my feet is itchy. I wonder if I have athlete's foot.
「(片方の)足がかゆい。水虫かなあ」
itchy は形容詞で足が片方でも両方でもitchy です。
athlete's foot で「水虫」
ーI have an itchy foot. I think it could be athlete's foot.
「足がかゆい。水虫かもしれない」
to have an itchy foot で「足がかゆい」とも言えます。
ご参考まで!