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.
By 1913, the Europeans had drawn boundaries for their 40 new states or âcoloniesâ. These boundaries form the basis of the African nations we have today. After the destruction of World War II, European countries no longer had the economic muscle or determination to rule Africa. From the 1950s, African countries began to gain their independence. 1  In 1950, four African countries â Liberia, South Africa, Egypt and Ethiopia â were independent. The majority gained their independence over the next 30 years, though Namibia and Eritrea had to wait until the 1990s.