Other autoimmune forms include dermatitis herpetiformis, which causes itchy skin lesions, and gluten ataxia, which affects brain tissue, resulting in unsteady gait and lack of motor control.

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Forecasters say people should limit outdoor activity during the hottest portions of the day, wear lightweight clothing, drink plenty of water and be watchful for signs of heat exhaustion, which include heavy sweating, pale and clammy skin, weak pulse, fainting and vomiting.

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Early results are promising, and the second compound may lack Sutent's side effects, which include fatigue, an incredibly sensitive tongue and yellowed skin.

FORBES

Treatment for sunspots can include skin bleaching products (look for hydroquinone, which is found in many lightening and clarifying products) and, retinoids.

FORBES: Woman Guide To Great Skin At Every Age