### Causes and Treatment of Purple-Red Pimples on the Back #### Causes The appearance of purple-red pimples on the back may be due to folliculitis, acne, or other skin infections. These pimples might rupture and bleed, possibly accompanied by pain and itching. #### Diagnosis For an accurate diagnosis, it is recommended to visit a dermatology clinic for a comprehensive examination. The doctor might perform a skin scraping test, bacterial culture, or other laboratory tests to determine the specific cause. #### Treatment 1. **Maintain Skin Cleanliness**: Bathe daily with a mild cleanser, avoiding greasy or irritating products. 2. **Topical Medications**: Use topical medications containing antibacterial ingredients, such as benzoyl peroxide or clindamycin. 3. **Oral Medications**: If the infection is severe, the doctor may prescribe antibiotics or other oral medications. 4. **Avoid Squeezing**: Refrain from squeezing the pimples to prevent further infection and scarring. #### Prevention 1. **Maintain Good Hygiene**: Change clothes frequently and keep the skin dry and clean. 2. **Dietary Adjustments**: Avoid spicy and greasy foods, drink plenty of water, and maintain a healthy diet. 3. **Regular Lifestyle**: Avoid staying up late and maintain a good sleep routine. If symptoms persist or worsen, it is advisable to seek medical attention promptly and follow the doctor's treatment recommendations.