Pipes get mineral build-up, or even rust, on the inside, which often gets loosened when working on Plumbing... even in copper pipe. There is usually a screen or aerator that can be easily unscrewed right where the water comes out. Just take it off, open both hot and cold valves all the way a few times, rinse the screen, and replace it. Sometimes the shut-off valves under the sink can clog with debris for the same reason. Turn off the faucet. Turn off the shut-off valves all the way, clockwise to close. Then take off the hoses (you might need pliers, or better yet, a wrench). Have a bucket (or garbage can, or a yogurt container or something) ready to put the ends of the hoses in. Open the FAUCET all the way on warm to let all the water out of the hoses, and into the bucket. You can then move the bucket and dump it. Next, hold the bucket under the sink so that you can open the shut-off valves one at a time to blow them out. Open them all the way, if possible, but be careful not to overflow the bucket... some valves take a lot of turns. If they are really bad, you can turn off the water main, unscrew the ring that holds on the actual valve stem, and turn the valve handle counter-clockwise until it comes out. You can then pick the pebbles out, or better yet, turn the water main on and off really quickly, while someone else holds the bucket. If you can't turn on the water without making a mess, just scrape around inside where the valve stem goes with a screwdriver or something. Then put the valves back together, and close them. Don't put the hoses back on yet. Go turn the main back on, and blow out the valves into a bucket, first. Otherwise, all that stuff will just clog the faucet.
A sudden decrease in barometric pressure is a sign that a storm is coming.
A sudden drop in the temperature
If the normal BP for the patient is well over that. If I have a normal blood pressure of 180/120 and all the sudden it drops to 100, then I might be at risk for syncope and hypoxia and other issues.
Sudden vasodilation
The sudden loss of water pressure in the shower could be caused by a clogged showerhead, a problem with the water supply line, or a malfunctioning pressure regulator.
It is not normal to black out. When a "black-out" occurs, it is due to some kind of problem with the body, and generally results from a sudden decrease in the amount of oxygen flow to the brain. Black-outs can occur due to low blood pressure. This low blood pressure, in turn, can be due to a problem with the pumping ability of the heart, a sudden loss of muscular tone in the arteries, blood loss, or even a psychological shock ("fainting"). Black-outs can also occur due to excessive toxic exposure (drinking too much), trauma to the brain (getting "knocked out"), or a sudden decrease in oxygen (altitude sickness).
Possible causes of a sudden change in water pressure in the shower include a clogged showerhead, a malfunctioning pressure regulator, a problem with the water supply line, or issues with the plumbing system.
No, it doesn't. The root of the aorta, being extremely flexible does, but the pressure at any point of the 'arterial tree' downstream of the aorta's 'root' remains at essentially constant pressure, -in the absence of sudden changes in stress, over reasonably long periods. If sudden demands for additional cardiac output are made, of course, then temporary increases may occur, which will revert to normal once the stress is removed.
Possible causes of a sudden loss of water pressure in a house with a well include a malfunctioning pressure tank, a clogged filter or pipe, a leak in the system, or a failing well pump.
Sudden change in blood pressure.
Anyone can have a sudden headache, but in children, you might want to take him to the doctor's just to check.
A sudden drop in water pressure in a residential plumbing system could be caused by a leak in the pipes, a malfunctioning pressure regulator, a clog in the pipes, or a problem with the water supply from the municipal system.