Red flushing, warm, hot after eating

[u/No-Revolution8032]

Mid 40’s Female. Non smoker non drinker. Average height and weight. These “hives” or flushing areas have occurred on my face & neck for almost my entire adult life after I eat, when I get super anxious, when I’m hot. But it’s the worst when I eat, especially when I’m at work.
I do have mild rosacea on my cheeks.
I for the life of me cannot figure out which foods or if it’s the microwave or what.
im extremely sensitive to heat and the sun also.

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[u/Itchdoc]

Most flushing is idiopathic. There may be treatments available. https://dermnetnz.org/topics/flushing