Can I have an allergy on salad?

I have eaten it in different ways and combinations in the last days and every time I get some little red stains on my skin. This didnt happen before,

I have eaten it in different ways and combinations in the last days and every time I get some little red stains on my skin. This didn't happen before, what could it be?

or:I have eaten it in different ways and combinations in the last days and every time I get some little red stains on my skin. This didn't happen before, what could it be?

or:It sounds like it could be related to allergy maybe salad had something in it that didn't agree with the salad

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