What is fear of the end called?

Is having a birth certificate proof positive of US citizenship? How are varicose veins diagnosed? How does asthma affect you physically? Should you be worried if you've had a small hard lump on the wall of your mouth at the front bottom for a couple of months? Burning breasts and bloating feeling? Are kids stomachs bigger than adults? What causes water retention during the day and multiple trips to the bathroom through the night? Impetigo? Can you get chlamydia from a male bladder infection? What muscle wraps around your ribs in the middle of your upper back? Could the same genetic condition that causes sickle cell anemia can also protect against any other diseases? What are the differences between the central and peripheral nervous veins? The left side of your stomach is numb and has brown spots? Does tonsillitis can cause swelling of lymph nodes? Which muscles do you use to nod? How many rest days do you need to take to heal a bone crack? Which word means having to do with the brain? Is it possible that a baby is born everyday? What color is chalk? If your gums bleed can that stain your teeth?