The British forced the issue by attacking the Chinese port cities of Guangzhou and Tianjin in the Second Opium War (1857â1858). Under the most-favored-nation clause, all of the foreign powers operating in China were permitted to seek the same concessions of China that Great Britain achieved by force.
The number of concussions experienced and whether teens also had headaches or nausea were not related to whether they also had emotional symptoms. Researchers also found that having a family history of psychiatric problems did not make teens any more or less likely to have emotional symptoms after a concussion.
Concussion Signs and Symptoms. A concussion is a type of traumatic brain injury, or TBI, caused by a bump, blow, or jolt to the head that can change the way the brain normally works. Concussions can also occur from a fall or a blow to the body that causes the head and brain to move quickly back and forth.