The causes of redness in the middle of the face include eczema, fungal infections, atopic dermatitis, and lipitis. 1. Eczema: If the inflammation of the skin of the upper lip is caused by many factors, the blood vessels dilate at this time, so the redness of the middle of the person. 2. Fungal infection: when the upper lip is infected by fungi, these fungi will damage the skin and cause blood vessels to dilate, so there will also be redness. 3. Allergic dermatitis: because various factors lead to an increase in the production of histamine, when the blood vessels dilate, oozing more, so the skin is red. 4. Lipitis: when bacteria and other microorganisms infect the upper lip, these microorganisms will stimulate vasodilatation, and redness will also occur. Finally, the phenomenon of redness in the middle of the person, please consult a doctor in a timely manner, and follow the doctor’s instructions for appropriate treatment.