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.
africans arrive in virginia, 1619 One stormy day in August of 1619 a Dutch manof-war with about 20 Africans on board entered port at the English colony of Jamestown, Virginia. Little is known of these newly arrived people: the first Africans to set foot on the North American continent. At this time the slave trade between Africa and the English colonies had not yet been established, and it is unlikely that the 20 or so newcomers became slaves upon their arrival.