2. Signs of infection
A problem will be hard to ignore once the cleft above your butt becomes a full-fledged cyst. becomes infected, it will quickly turn into a cyst (closed sac filled with fluid) or an abscess (swollen, inflamed tissue where pus collects).
3. Sacral Pain
During a pilonidal cyst flare, most sufferers complain of extreme pain in the sacral region (the area directly above the buttocks), especially when sitting or when abrasive clothing comes into contact .
An inflamed pilonidal cyst can be excruciating for the sufferer to treat. Inflammation and swelling occur when the cyst becomes infected, fills with pus, hair, and blood.
Tenderness, redness, and swelling between the cheeks of the buttocks just above the anus (the sacrum) are a telltale sign of a pilonidal cyst. At the start of the infection, the redness and swelling will be minimal. However, as the infection gets worse, the boil will grow larger and eventually need to be pierced and drained of pus and infection.
6. Foul Smell
The most painful and uncomfortable aspect of a pilonidal cyst is when the abscess becomes infected and turns into a boil. Each time the pilonidal abscess swells; he becomes engorged with a mixture of clogged hair, foul-smelling pus and blood.