What causes pimples in your ears?

Plugged glands, etc. The skin of the ear is no different than the skin of the rest of the face. It responds to the same hormonal stimulations. So it is not at all unusual for acne pimples to appear on the ears, and it is not unusual for them to respond to the same treatments we use for other areas.

Related Questions

Is it common to get like a sore/ blister in your ears that makes your ear drum hurt. I also get them in my mouth to. Don't look anything like pimples?

Ear infection. It sounds as if you may have an outer ear infection. See your doctor. He/she will be able to diagnose and treat your condition. Read more...
Sore/blister. The sore/blister has to be examined to be diagnosed. Have your Physician or an ENT specialist look into your ear. Have your Dentist or an Oral Surgeon examine the sore/blister in hour mouth. May or may not be from the same causative agent. Read more...