讳疾忌医的英文：
[Literal Meaning]
avoid as tattoo/illness/fear/treatment
not like to mention one's illness and receive treatment

[解释]
讳和忌：现在通常说“忌讳”。怕人批评而掩饰自己的缺点和错误。

[Explanation]
to conceal one's fault for fear of criticism

[例子]
既然出了问题，就不要讳疾忌医我们要去向专家咨询。

[Example]
Since there are problems, we should not conceal our fault for fear of criticism and should ask for advice from those experts.

Hide nothing from thy physician
切莫讳疾忌医

Don't hide your sickness for fear of treatment.
不要讳疾忌医。