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    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of and finding treatments for complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia (FM), long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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Face.

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@Fuzzyhead - If I had to guess: histamine? Are you eating common allergens like wheat or dairy? Anything spicy? Maybe you could find a culprit through process of elimination?

Fluoxetine and amitriptyline can also cause flushing, per here and here.