Jul 30, 2019 ยท Why Are There White Spots on My Skin? Pityriasis alba. Pityriasis alba, or PA, is a skin disorder commonly affecting children between the ages of 6 and 12. Vitiligo. Vitiligo is an autoimmune disorder that is due to the loss of melanocytes โ€” the pigment producing cells โ€” and Milia. Milia are White spots on your skin can signal idiopathic guttate hypomelanosis, a result of UV exposure. They may also be leftover scars from eczema or tinea versicolor, a fungal infection. Flat warts look like light-colored shiny patches that are caused by HPV. Advertisement G0bTAU.

why do i have white spots on my skin