Can spicy food cause allergy and/or flu like symptoms?

Patient: Can highly spicy foods cause allergies and/or trigger flu like reactions?

Symptoms: -recurring high grade fever
-joints and back pain
-constipation/hyper acidity

Doctor: Yes, spicy food intake can cause upper respiratory congestion (similar to a flu) due to increased vascularity (increased blood flow due to its irritant effect) and excessive mucous secretion. However, it is never associated with a high grade fever.