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.
A concussion may be caused by a blow to the head or by violent shaking that causes the brain to collide with the inside of the skull.wo of the most common symptoms of concussion are amnesia and confusion. Depending on the injury, patients may experience immediate symptoms, or symptoms may arise days or weeks later. Mild symptoms of concussion include: 1  Headache or migraine. 2  Temporary memory loss.