Excessive sun exposure is a common cause of brown spots on the scalp due to conditions such as melasma and actinic keratosis, per the Mayo Clinic and the American Academy of Dermatology. While these conditions differ slightly from each other, they both are frequently caused by excessive ultraviolet radiation. Continue Reading.
Mexico is a part of North America. Maybe you are thinking of Northern America, which is a tricky area as sometimes Mexico is included and sometimes it is not. Northern America â¦ is the northern portion of North America, in which Canada and the United States are usually the two sole members.
Where is Mexico Located? Mexico is a country with a large population which is located in the continent/region of North America. Countries near Mexico include Guatemala, Belize, United States of America and El Salvador. Its biggest cities and towns include Mexico, Ecatepec, Guadalajara and JuÃ¡rez.