Detailed answer

Blackheads are caused by clogged hair follicles with oil, dead skin cells, and bacteria. They are more commonly associated with hormonal changes, excess oil production, and poor skincare habits. Allergic reactions to food typically manifest as hives, swelling, itching, and digestive symptoms such as nausea or diarrhea. If you suspect an allergic reaction to food, it is recommended to consult with a medical professional for proper evaluation and diagnosis.