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.
EXECUTIVE SUMMARY. 1  Headache is the most commonly reported symptom of concussion, with immediate loss of consciousness occurring in < 10% of cases. Early symptoms of concussion may also include dizziness, amnesia to the event, confusion, nausea, and vomiting.