“Cockayne syndrome (also called Weber-Cockayne syndrome, or Neill-Dingwall Syndrome) is a rare autosomal recessive congenital disorder characterized by growth failure, impaired development of the nervous system, abnormal sensitivity to sunlight (photosensitivity), and premature aging. Hearing loss and eye abnormalities (pigmentary retinopathy) are other common features, but problems with any or all of the internal organs are possible. It is associated with a group of disorders called leukodystrophies. The underlying disorder is a defect in a DNA repair mechanism. It is named after English physician Edward Alfred Cockayne (1880–1956)”. – Wikipedia

Photo: Mother of 12-year-old Chinese girl Sun Yangyang suffering from Cockayne syndrome, tends her at the First Affiliated Hospital of Jilin University on November 11, 2006 in Changchun of Jilin Province, China. The disease results in the senile appearance of Yangyang and also causes eyesight, hearing weakness and other problems. Doctors failed to cure the girl... (Photo by China Photos/Getty Images)

Members of the Moranbong Band from North Korea wait inside the lobby of a hotel in central Beijing, China, December 11, 2015. North Korea's premier pop group, the all-girl Moranbong band formed by leader Kim Jong-Un, is electrifying audiences in China in shows aimed at harmonising out-of-tune ties between the traditional allies, reports and the venue said on December 9 – but tickets are not available to the public. (Photo by Reuters/Stringer)

A girl shows a fish she has caught in a bare- hand fish catching contest held in Housangyuan Village of Lyutan Township Wuyi County, east China' s Zhejiang Province, September 23, 2018. People across China hold various activities to celebrate the country' s first Farmers' Harvest Festival, which falls on Sept. 23 this year. (Photo by Zhang Jiancheng/Xinhua News Agency/Barcroft Images)

Four-year-old Chinese girl Jiaxue, who suffers from hairy black moles, sits on a bed at home November 4, 2006 in Changchun of Jilin Province, China. Jiaxue was born with black moles covering part of her back, breast, neck and face. Experts said the condition may be an atavism. (Photo by China Photos/Getty Images)

Girls practice sit-ups during gymnastics lessons at the Shanghai Yangpu Youth Amateur Athletic School in Shanghai, China, on May 4, 2016. China's sports system has been enormously successful since the country returned to the Olympic fold in 1980, culminating with the host nation topping the medals' table at the 2008 Beijing Olympics. And yet, with the Rio de Janeiro Games less than three months away, the system is beginning to break down due to the shifting demographics of a more prosperous nation. (Photo by Aly Song/Reuters)

A girl holds up her hand to confront the police during a banned protest in Hong Kong on July 1, 2020. China imposed a controversial national security law on Hong Kong on Tuesday, a historic move that worried many Western governments that will strangle the finance hub's freedoms and hollow out its autonomy. (Photo by Keith Tsuji/Zuma Press/Rex Features/Shutterstock)

A Chinese girl touches the gun of a relievo featuring Chinese soldiers fighting with Japanese troops during World War II at an exhibition at the Anti-Japan War Museum to mark the 60th Anniversary of the Victory of the Chinese People's War of Resistance Against Japan on August 18, 2005 in Beijing, China. (Photo by Cancan Chu/Getty Images)

A young Chinese girl kicks during a kung-fu class at Ritan Park on June 11, 2016 in Beijing, China. Ritan, meaning “sun altar”, is among the oldest parks in Beijing, built in the early 1500s during the Ming dynasty for the emperor to make sacrifices to the sun. (Photo by Kevin Frayer/Getty Images)