Nodule from a follicle may be a painful ailment that demands proper treatment. Such form of cyst develops when an ingrown hair grows back within the skin, causing irritation and potential infection. Treating a cyst caused by an hair effectively may help alleviate discomfort and avoid additional issues. In case you are dealing with an ingrown hair cyst, visiting medical guidance is advisable to address it properly and prevent any potential dangers associated with DIY approaches.