Ingrown hair cyst Treatments causes and preventionBump from a hair may be an uncomfortable issue that requires proper treatment. Such form of lump arises when a hair becomes back into the skin, triggering irritation and potential infection. Dealing with an ingrown hair cyst caused by an ingrown strand correctly can help relieve pain and prevent additional issues. Should you be struggling with a cyst, seeking medical advice is advisable to address it adequately and prevent any potential dangers associated with DIY approaches.