Other conditions that can cause numbness and tingling are: 1  insect or animal bites. 2  radiation therapy. 3  abnormal levels of vitamin B12 or other vitamins, potassium, calcium, or sodium. 4  seafood toxins. 5  carpal tunnel syndrome (pressure on the nerves in your wrist).
New York City is considered the county seat of these five counties: New York County (Manhattan), Kings County (Brooklyn), Bronx County (The Bronx), Richmond County (Staten Island), and Queens County (Queens).
With a few small offshore islands, notably Roosevelt Island in the East River, and a small area on the mainland, Manhattan forms the borough of Manhattan within New York City, and New Yorks New York County. Before 1898, New York City was limited to Manhattan Island.