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Lymphadenopathy is a condition where the lymph nodes, small round organs found all over the body, begin to swell, which could cause painful lump behind ear. The swelling is caused by accumulation of immune cells within the lymph node.
You have ear pain. Your outer ear canal is red and swollen. You have clear fluid or pus leaking out of your ear. Your outer ear canal is itchy and you see a rash. You have trouble hearing because your ear is plugged. You feel a bump in your ear canal, called a polyp. Flakes of skin fall from your ear.