Nodule caused by an ingrown strand may be an unpleasant ailment that needs adequate treatment. This form of lump forms when an ingrown hair grows back into your epidermis, triggering inflammation and potential infection. Treating an ingrown hair cyst caused by an strand effectively can help relieve unease and prevent additional complications. If you're dealing with a cyst, seeking professional advice is recommended to treat it properly and prevent any potential risks hinged on treating it on your own.