Some possible causes of constant redness in the face are rosacea, Cushing's disease, emotional triggers and spicy foods, explains Healthline. Redness is a result of increased blood flow, which causes blood vessels to enlarge.
Rosacea is a common skin condition characterized by redness and acne breakouts, and it affects more than 13 million Americans. Treatment can include natural means as well as medication, notes WebMD. Cushing's disease occurs as a result of excess cortisol in the body, which triggers facial redness. Emotions are common triggers of redness because they cause blood pressure to increase. Spicy foods are another cause of constant redness because a person's blood temperature increases after eating them.