Add Yahoo as a preferred source to see more of our stories on Google. Pimples are a common occurrence for many of us—and in most cases, we're used to dealing with them on our face, neck, chest, or ...

Medically reviewed by Sukaina Hasnie, MD Key Takeaways A lump behind the ear is often caused by swollen lymph nodes or acne.Most lumps behind the ear are harmless and treatable by healthcare providers ...