Pimple Turned Into Hard Lump. It typically starts as a reddened and raised lump and progresses into what is referred to as a carbuncle or a boil. Contaminated debris from the follicle empties into the dermis and infects adjoining follicles.

The main difference to note is that these bumps will not feel soft like a pimple but rather will be firm or hard to the touch. This can happen in hair follicles or open cuts and wounds. We have put together some expert tips for you to get rid of blind a blind pimple is.
Nothing draws out toxins and bacteria like activated charcoal does.
Angelica Giron MD answered this Common Non-Cancerous Lumps Under the Skin. Hard pimples develop when dead skin cells sebum and bacteria enter the skins surface. Posted August 10 2012. Where papules and pustules occur at the surface nodules form deeper within the skin.