A patient who has had a pilonidal sinus may develop recurrent disease. The risk is affected by a number of factors.
Parameter
Increased Risk
Decreased Risk
excision of lesion
incomplete, with residual track(s)
complete
wound care
poor
scrupulous
post-procedural scar
raised, in midline
broad and flat
hair in region
regrowth
kept shaved
infection in adjacent hair follicles
recurrent
absent
wound healing
poor
good
where:
• Wound healing may be poor with chronic corticosteroid therapy, poorly controlled diabetes, edema, malnutrition and other factors (see section 29.28).
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