When hay fever first occurs it is often mistaken for a summer cold.

花粉病刚发作时，常会被误认为是热伤风。

《柯林斯英汉双解大词典》

I have a fever/headache/cold/toothache.

我发烧/头疼/感冒/牙疼。

youdao

I have a cold and a fever.

我不仅感冒还发烧了。

youdao

Speculation rose every time she canceled a public event because of a fever or a cold.

CNN: AN HEIR OF CHANGE IN JAPAN

The biggest difference between a cold and the flu is usually the presence of a fever which comes on suddenly.

FORBES: How do you know if you have the flu?

Symptoms of measles include fever, cold-like symptoms, fatigue, conjunctivitis and a distinctive red-brown rash that appears a few days into the illness.

BBC: Swansea measles epidemic: Man who died had measles