Commelina warts, liquid nitrogen frozen once, two days, no blisters, there is a black thorn, how to

Plantar wart, liquid nitrogen frozen once. Two days without blisters but a black thorn, should be frozen caused by local skin damage caused by congestion, pigmentation. You can apply local ganciclovir ointment, acyclovir ointment and other antiviral treatment, control the symptoms of virus infection. Temporarily stop liquid nitrogen freezing treatment.