1. Excessive sweating can also contribute to the cause of a pilonidal cyst . 2. One proposed cause of pilonidal cysts is ingrown hair. 3. In particular, a pilonidal cyst in the gluteal cleft can resemble a sacrococcygeal teratoma. 4. Some researchers have proposed that pilonidal cysts may be the result of a congenital pilonidal dimple. 5. It is characterized by clusters of abscesses, epidermoid cysts, sebaceous cysts, pilonidal cysts . 6. A pilonidal cyst is usually painful, but with draining, the patient might not feel pain. 7. The presence of bacteria and low oxygen levels hamper wound healing and exacerbate a forming pilonidal cyst . 8. A pilonidal cyst can resemble a dermoid cyst, a kind of teratoma ( germ cell tumor ). 9. R . M . Hodges was the first to use the phrase pilonidal cyst to describe the condition in 1880. 10. He also developed a procedure for pilonidal cysts , draining them with a catheter instead of the standard surgical excision. 
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