Confidence votes 11. According to Wikipedia, the width of the Atlantic Ocean at its narrowest point is 2,848 kilometers (1,770 mi) between Brazil and Sierra Leone.
What causes PNH? It is not fully understood why people develop PNH. Inside the bone marrow, blood cells are made by stem cells (the seed cells of the marrow). PNH occurs due to a change (or mutation) in a gene in one of the stem cells in the bone marrow. This mutation happens in a gene called PIG-A and the cells made by this stem cell lack certain proteins on their surface making them âweakerâ than normal blood cells.
There are over 100 types of PN and many different causes for it. They include injury, inherited diseases, chronic conditions, infections, medicines, lack of vitamins or HIV itself. A common example of PN is carpal tunnel syndrome. Peripheral neuropathy can be due to damage to the coating (myelin) of the nerve endings. The damage may also be due to a breakdown of the nerve endings themselves. Some chronic conditions can also cause PN, like diabetes, arthritis and lupus, as well as some viral infections, like CMV or herpes.