This is a superficial, eczematous inflammation, a completely different process than the deep, suppurative, and scarring nodules and sinus tracts of dissecting cellulitis.
Simple folliculitis consists of superficial pustules, whereas dissecting cellulitis is a deep, interconnecting process of abscesses and sinus tracts leading to scarring alopecia.
A kerion is an acute, inflammatory reaction to a tinea infection, and while boggy and suppurative, it is a single lesion that resolves with antifungal therapy, unlike the chronic, multifocal nature of dissecting cellulitis.