Nodule caused by an ingrown trichome can be a painful condition that needs adequate treatment. Such kind of lump develops when an ingrown hair grows back into your epidermis, causing inflammation and possible infection. Managing a cyst caused by an ingrown strand properly can help alleviate pain and stop additional complications. If you're having difficulties with an ingrown hair cyst, visiting professional advice is advisable to manage it properly and prevent any potential dangers associated with self-treatment.