Foot fungus is normally not contagious to the face. However, if you often pick your feet, through the hands and then indirectly infected, such as picking your feet with your hands and then touching on the face, this may cause the planting of fungal infection, which may cause a fungal infection of the face, forming ringworm on the face. So this is not very likely, but it can happen under certain conditions. For this condition, if once it occurs afterward, active antifungal treatment is needed. If the facial lichen planus appears to be enlarged in area or the inflammatory reaction is more obvious, you need to apply topical tretinoin econazole cream or topical terbinafine cream and so on. If accompanied by itching, you also need to take oral antihistamines.