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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.
Ear wax build-up is fairly painless, but pain or discomfort is a classic sign of infection. Swimmerâs ear is the most common ear infections, and itâs very likely to cause swelling and discomfort or pain. When you have a cold, itâs very likely that your nose becomes stuffed up.