This is Dr. David
I am another expert there.
that lump could be due to to a blocked skin pore or a subaceous cyst
there could be an ingrown hair causing an infection in that lump on the ear
that can cause local lymph nodes to swell up.
in rare cases, skin cancers can cause enlarged masses and bleeding from squamous or basal cell carcinomas of the skin on the ear if you have had a lot of sun exposure before.
benign causes such as sebaceous cyst or ingrown hair follicle would be more likely.
let me know if you have other questions.
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