Fungal infection in nail by pictures?

Onychomycosis: These usually require oral medications which can only be obtained by prescription. See a doctor and get this treated asap. They can cause permanent loss of nails and other problems if not dealt with contemporaneously.

Vicks vapor rub: Try applying Vicks vapor rub twice daily to the affected nail for 6-12 months. You should see a clearer healthy appearing nail grow in over that time frame as the diseased nail gets pushed out. The recurrence rate with any type of treatment utilized is very high...So essentially it makes little difference in the long run how you treat it.