If you have an infected ear piercing, there are several things you can do to treat it. Here are some steps you can take based on the information from the search results:

1. Clean the piercing: Use a saltwater rinse to clean the infected ear piercing three times a day. You can use sterile saline or mix 1/4 tsp. of salt with 8 oz. of distilled water.

2. Apply antibiotic ointment: After cleaning the piercing, apply antibiotic ointment to the affected area twice daily.

3. Use a warm compress: Applying a warm compress to the infected earlobe or cartilage can help reduce swelling and pain.

4. Take oral antibiotics: If the infection is severe, your healthcare provider may prescribe oral antibiotics.

5. Leave the earring in: In general, it is not recommended to remove the earring unless it is causing an allergic reaction. By keeping the earring in, you allow a channel for the drainage to exit the piercing.

6. Seek medical attention: If the infection does not improve with home treatment within two days, you develop a fever, or the infection spreads beyond the piercing site, seek medical attention.

To prevent an ear piercing infection, you should take good care of your piercings. Here are some tips to follow:

• Leave your earrings in day and night until the piercings fully heal, which could take up to six weeks.
• Wash your hands before touching your earlobes or cartilage.
• Wash your piercing twice daily with a mild soap or cleanser.
• Rinse your piercing carefully after washing it.
• Apply rubbing alcohol and/or antibiotic ointment to the area twice daily.
• Gently rotate your earrings daily after applying antibiotic ointment or petroleum.

If you are experiencing an infected ear piercing, it is important to take action to treat it as soon as possible to prevent the infection from spreading.