Ingrown hair and staph infection Symptoms causes treatmentNodule from a trichome can be an unpleasant condition which needs proper treatment. Such kind of lump forms when a hair becomes back into your epidermis, triggering inflammation and potential infection. Treating an ingrown hair cyst caused by an ingrown hair properly can help relieve pain and prevent further complications. If you're struggling with a cyst, visiting professional guidance is advisable to treat it properly and prevent any potential risks hinged on DIY approaches.