This cyst may have a deep cavity containing hair and may be without symptoms unless it becomes infected.
Treatment consists of antibiotics if the area is infected.
After the infection is cleared, a day surgery procedure to remove the cyst is performed. The cyst may be a simple abscess or may be draining from sinus tracts that need to be closed. The process of raising the borders of the emptied cyst and stitching them to form a pouch is called marsupialization. The interior of the pouch then empties the collection of pus and gradually closes. Several weeks of packing the pouch with gauze is needed to collect the pus while the pouch closes.