A pilonidal cyst is usually painful, but with draining the patient might not feel pain. [en.wikipedia.org]

[…] anorectal problem that may arise in one of three forms: Acute abscess Sinus tracts Complex disease characterized by chronic or recurrent abscesses with extensive, branching sinus tracts Symptoms related to pilonidal abscess include fever, chills, and pain [ncbi.nlm.nih.gov]

It was first proposed by Maurice and Greenwood in 1964 as an alternative to more extensive surgical procedures. [ncbi.nlm.nih.gov]

Recorded instances include patients with continued post-operative pain for years following the surgical procedure. [en.wikipedia.org]

Pilonidal disease is a type of skin infection which typically occurs as a cyst between the cheeks of the buttocks and often at the upper end. [1] [3] Symptoms may include pain, swelling, and redness. [1] There may also be drainage of fluid, but rarely a fever [en.wikipedia.org]

[…] disease is a common anorectal problem that may arise in one of three forms: Acute abscess Sinus tracts Complex disease characterized by chronic or recurrent abscesses with extensive, branching sinus tracts Symptoms related to pilonidal abscess include fever [ncbi.nlm.nih.gov]

Pilonidal disease Other names Pilonidal cyst, pilonidal abscess, pilonidal sinus, sacrococcygeal fistula Pilonidal cysts of sudden onset in the upper gluteal cleft Specialty General surgery, emergency medicine Symptoms Pain, swelling, redness, drainage [en.wikipedia.org]

Trauma is not believed to cause a pilonidal cyst; however, such an event may result in inflammation of an existing cyst; there are cases where this can occur months after a localized injury to the area. [en.wikipedia.org]

Some researchers have proposed that pilonidal cysts may be caused by a congenital pilonidal dimple. [10] Excessive sweating can also contribute to the formation of a pilonidal cyst: moisture can fill a stretched hair follicle, which helps create a low-oxygen [en.wikipedia.org]

A series of 21 patients followed up for an average of 28 months showed considerable morbidity, including hypesthesia in nearly every patient, and only 67% overall satisfaction. 43, 44 Patients frequently complained of discomfort, pruritus, and poor cosmesis [ncbi.nlm.nih.gov]

100,000 people was calculated by Sondenaa and others in a study of 322 patients with pilonidal disease. 5 It is, however, more common in young adult men, a population with an incidence of 1.1%. 6 Men are thought to be at higher risk because of their more hirsute [ncbi.nlm.nih.gov]

It also flattens the cleft, reducing hair accumulation and mechanical irritation. [ncbi.nlm.nih.gov]

The condition was termed "Jeep seat" or " Jeep riders' disease", because a large portion of people who were being hospitalized for it rode in Jeeps, and prolonged rides in the bumpy vehicles were believed to have caused the condition due to irritation [en.wikipedia.org]

This complex variant of the disease may stem from prolonged neglect of symptoms but also occurs despite appropriate treatment. TREATMENT Treatment of pilonidal disease depends on the presentation. [ncbi.nlm.nih.gov]