White Superficial Onychomycosis

SWO consists of a small subset of onychomycosis, in which the route of infection occurs via the dorsal aspect of the nail plate. There are two variants of SWO: a superficial and a deep variant. SWO can rarely be pigmented. Rarely, SWO originates from beneath the proximal nail fold. Deeper nail penetration has been linked to mold infection. SWO is commonly associated with DLSO. SWO can be treated with topical antifungals in most cases.