Red papules must be treated as soon as possible when they appear on the surface of the skin. Currently, such as dermatitis and eczema can cause red papules. When red papules are found, you must first maintain emotional stability, pay attention to daily rest and exercise, and avoid excessive late nights. You must also control your diet, eat lightly, avoid smoking, alcohol and eating spicy, irritating foods. Topical medications such as antihistamines can also be applied topically, while vitamin C sedatives can also be applied to control itching. If the red rash starts to have a foreign body or even emits a smell, it indicates signs of bacterial infection and may require topical application of antibacterial creams or oral antibacterial medication to avoid worsening of the condition.