Forehead acne may be the result of stomach fire (stomach fire and heat evil exuberance), but also may be related to diet spicy, yin deficiency and fire (Yin essence loss in the body, the emergence of virtual fire hyperactivity) and other reasons. 1. Diet: If you usually eat spicy and stimulating food, you may have forehead acne. 2. Excessive stomach fire: Because Yangming meridian runs in the forehead area, if you often eat some spicy and stimulating food, drink alcohol or have a strong stomach fire, it is easy to cause the stomach fire, disturbed by the meridian, the patient may have a dry mouth, bitter taste in the mouth, forehead acne and other symptoms. 3. Yin deficiency and fire: If you stay up late for a long time, depletion of yin fluid, or vegetarian yin deficiency, false fire offenders, may appear forehead acne, mouth ulcers and other symptoms. The situation of forehead acne usually pay attention to the combination of work and rest, avoid staying up late, overwork, less smoking and drinking, light diet. If there is any discomfort, it is recommended to seek medical treatment.