When have you got the rash? vs When did you get the rash?

[Mofli]

Hello, I learnt I must use When did you... and can use When have you ever... as a rhetorical question only.
But how about this sentence:
When have you got the rash?
It seems to be correct. Why?

Which one is correct:
1/ When have you got the rash?
2/ When did you get the rash?

and do both mean the same? I'm confused.

thanks a lot

[Kitosdad]

When did you get the rash? This is correct.

The other may be used, but it is couched in poor English.

They do both mean the same thing.
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