Hi,
Thank you for posting in Doctor spring.
Pilonidal cyst/Sinus arises in hair bearing area which has pressure. Due to prolonged sitting posture,hair around buttocks will grow inwards and form a sinus.It will be discharging fluid/pus .
Surgery is the only option.
I have done surgery to many people with Pilonidal sinus.Success rate is good.
If the wound is left open after removal of sinus,it will take 6-8 weeks to heal. If it is closed,it will heal soon.
It will not cause bleeding.Bleeding points can be controlled.If you have bleeding disorder,Then the blood flow will be continuous .Otherwise,nothing to worry.
It will be 100% cured by surgery.
Wish you good health.
Regards