I keep getting these giant zits om my ear lobe. they are huge?? do you have any idea what the heck they are? and how to prevent them?

Epidermoid cyst ?: If you have pierced ears and the area of inflammation and pus formation is close by, you could have epidermoid cysts. This is caused by implantation of epidermis (skin cells) into the dermis (below the skin level) during ear piercing. They can also be caused by a blocked pore adjacent to the piercing. Cysts can be removed by surgical excision.