Subsequent attacks may be prevented by avoiding known precipitants, such as high salt or carbohydrate intake, until the thyroid disease has been adequately treated.Treatment of the thyroid disease usually leads to resolution of the paralytic attacks. Depending on the nature of the disease, the treatment may consist of thyrostatics (drugs that reduce production of thyroid hormone), radioiodine, or occasionally thyroid surgery. Epidemiology
TPP occurs predominantly in males of Chinese, Japanese, Vietnamese, Filipino, and Korean descent, as well as Thais, with much lower rates in people of other ethnicities. In Chinese and Japanese people with hyperthyroidism, 1.8–1.9% experience TPP. This is in contrast to North America, where studies report a rate of 0.1–0.2%. Native Americans, who share a genetic background with East Asians, are at an increased risk.The typical age of onset is 20–40. It is unknown why males are predominantly affected, with rates in males being 17- to 70-fold those in females, despite thyroid overactivity being much more common in women. History
After several case reports in the 18th and 19th centuries, periodic paralysis was first described in full by the German neurologist Carl Friedrich Otto Westphal (1833–1890) in 1885. In 1926 the Japanese physician Tetsushiro Shinosaki, from Fukuoka, observed the high rate of thyroid disease in Japanese people with periodic paralysis. The first English-language report, in 1931, originated from Dunlap and Kepler, physicians at the Mayo Clinic; they described the condition in a patient with features of Graves disease. In 1937 periodic paralysis was linked with hypokalemia, as well as precipitation of attacks with glucose and insulin.
Skin-bleaching products that inhibit pigmentation or cosmetic creams containing the ingredients alpha hydroxy acids or retinoids are known to be effective. Liver spots can also be frozen off with liquid nitrogen; that is, via cryosurgery. See also
Freckle
Lentigo
List of cutaneous conditions

References
External links
 Media related to Solar lentigo at Wikimedia Commons