Diseases that cause Hyper-excitability. Peripheral nerve hyperexcitability (PNH) is any disorders associated with twitching spasms, spontaneous muscular activities, facial tics etc.iseases that cause Hyper-excitability. Peripheral nerve hyperexcitability (PNH) is any disorders associated with twitching spasms, spontaneous muscular activities, facial tics etc.
On April 6, 1652 the first white people (Dutch) arrived in South Africa to establish a settlement at the Cape. Their purpose, initially, was not to colonize the area, but to s â¦ upply fresh food for the men on the Dutch ships sailing on the long route between Europe and India.
In the late 19th century, between roughly 1875 and 1900, a handful of European nations conquered most of Africa. Since this came after more than three centuries of relatively cooperative trading activity between Europeans and Africans, it represents a significant departure in world history.UROPEAN BELIEFS ABOUT AFRICA Three centuries of the slave trade had taught Europeans that Africans were inferior, and that helped to justify imperialism in the minds of many Europeans.