Heatstroke or other heat-related illnesses from too much sun exposure
Allergic reactions to sun exposure or to sunscreen products
Vision problems, such as burning, pain, decreased vision, or partial or complete vision loss
An increased chance of developing skin cancer
An increase in other health problems, such as lupus or cold sores
Cataracts, from direct, intense sun exposure over many years; cataracts are one of the leading causes of blindness
Skin changes, such as premature wrinkling or brown spots