Hong Kong leader John Lee Ka-chiu is suffering from a bout of sciatica, a common degenerative condition that mostly affects middle-aged people who might be unaware of its seriousness at first, until the pain worsens and affects their mobility. The Chief Executive’s Office revealed that Lee had sciatica after he attended a swearing-in ceremony for lawmakers on Thursday, and a walking cane was spotted nearby. His condition raised awareness of the at-times excruciating ailment, which is caused by...