Thanks for posting question on HCM,
You are probably suffering from Pityriasis alba
which is usually appear in school going age but may appear later,it is mostly seen on face and become worse in summer esp under sun.
Apply sunblock SPF 60 in morning and 1 percent Hydrocortisone
at night for 15 days then let me know.Also take sebex Z once a day.
Hope this will alleviate your anxiety
Dr sher bhutto