Nodule caused by an ingrown hair may be a painful condition which needs correct treatment. This type of bump forms when a hair becomes back into the skin, triggering irritation and possible infection. Treating an ingrown hair cyst caused by an hair correctly could help relieve unease and avoid further problems. In case you are having difficulties with an ingrown hair cyst, visiting medical advice is suggested to manage it adequately and prevent any potential risks hinged on self-treatment.