Lump Behind Ear After Wearing Earrings. You can treat them by soaking a pad in warm water then holding the pad against them once a day. Some people react to earrings made from nickel if you suspect this is the cause then remove your earrings and look for nickel-free alternatives.
Check if you have. One can developed a lump in earlobe immediately after wearing an earring made from the offending metal. A lump behind the ear after piercing is not uncommon especially in cases where the piercing becomes infected.
The hole in the back of the ear feels closed and its still kinda hurty two days later if I feel the back where theres a bump where.
Another way to easily heal this problem is by the use antibiotic. Bumps from piercing happen due to the sudden removal of skin when the needle punctures the skin to make a small hole for the earring. If by the third day you still have the same swelling or it has increased in size you need to have it checked. Another way to easily heal this problem is by the use antibiotic.