wheals is a form of:

Wheal



ENGLISH MEANING
noun
1.
A more or less elongated mark raised by a stroke; also, a similar mark made by any cause; a weal; a wale.
2.
Specifically (Med.), a flat, burning or itching eminence on the skin, such as is produced by a mosquito bite, or in urticaria.
1.
A pustule, a whelk
2.
A mine