Ingrown Hair What It Looks Like Causes Treatment PreventionLump caused by an ingrown hair is a painful condition which requires correct treatment. This kind of lump forms when an ingrown hair grows in into your epidermis, causing inflammation and possible infection. Treating a cyst caused by an strand correctly can help alleviate pain and prevent more issues. In case you are dealing with an ingrown hair cyst, visiting professional advice is advisable to address it properly and avoid any potential dangers associated with treating it on your own.