Pilonidal sinus is due to peculiar anatomy of certain individuals with extra hairs and propensity to sweat that region.
Best treatment is surgey if infection recurs...
Any delay will increase in complications .
Next Steps
send a pic so that I can asses the condition.
and mri my he required in case sinus is deep.
consult clinically or online for more details.
Health Tips
keep are clean with antiseptic solutions and avoid sweating in that area.