What is a bump in your ear cartilage just below the entrance to that pops out on back and hurts badly although ears have been pierced since you were young it appeared?

There are a few possibilities for what could be causing a bump in your ear cartilage just below the entrance to your ear that pops out on the back and hurts badly, despite your ears having been pierced since you were young. Here are a few:

1. Infected piercing: If your ear piercing has not been properly cared for, it may have become infected. This can cause a painful bump to form on the back of your ear, near the entrance to the piercing. The bump may be red, swollen, and tender to the touch.

2. Keloid scar: A keloid scar is a type of scar that forms when the skin produces too much collagen in response to an injury. Keloid scars can be itchy, painful, and unsightly. They can occur on any part of the body, but they are most common on the earlobes, chest, shoulders, and back.

3. Sebaceous cyst: A sebaceous cyst is a small, round bump that forms when a sebaceous gland, which produces oil for the skin, becomes clogged. Sebaceous cysts are usually painless, but they can become infected and painful if they are not properly treated.

4. Chondrodermatitis nodularis helicis: This is a condition that causes a painful bump to form on the ear cartilage. It is thought to be caused by repeated trauma to the ear, such as from wearing headphones or earbuds.

5. Perichondritis: This is a serious infection of the ear cartilage. It can be caused by trauma to the ear, such as from a piercing or surgery, or it can spread from an infection in the outer ear. Perichondritis can be very painful and can lead to permanent damage to the ear.

If you are experiencing a painful bump in your ear cartilage, it is important to see a doctor to get it diagnosed and treated properly. The doctor may recommend antibiotics, anti-inflammatory medications, or surgery to remove the bump.