This man is a 69-year-old truck driver, making his living behind the wheel for the past 28 years. Half of his face looks normal for his age, but because he spent daytime hours with the sun to his left for nearly three decades, the left side of his face looks decades older.
The name for his condition is unilateral dermatoheliosis (one-sided photoaging). Driving with the sun beating down on his face and arm exposed the patient to damaging UVA rays for hours each day, just as if he had been lying on a beach with that skin exposed. Even with the window closed, UVA rays can penetrate window glass if not tinted enough to protect passengers inside the vehicle.