1 Vitiglio-Skin condition where the skin loses pigment or color. 2  Fungus (e.g; tinea versicolor)- A fungal infection can cause white spots on areas such as the back and chest. 3  An athletes foot or jock itch cream could be of some help.4  Fungus can also be contracted from tanning beds.hite Spots on Skin. 1  Vitiglio-Skin condition where the skin loses pigment or color. 2  Fungus (e.g; tinea versicolor)- A fungal infection can cause white spots on areas such as the back and chest. 3  An athletes foot or jock itch cream could be of some help. 4  Fungus can also be contracted from tanning beds.