Salt water and do not touch it. Try bio oil for the scar.
If its an old piercing its most likely scar tissue, if its a new piercing its most likely getting infected and there is pus in the bump.
A nose piercing, should you no longer want to have it, will usually heal itself and present a scar afterwards.
As long as there is jewellery in the piercing the piercing will not scar, it will form new tissue that makes up the piercing. If the jewellery is removed before the piercing is allowed to heal completely this tissue will join together and form scar tissue.
I used mederma - it's a scar healing ointment. Basically that bump is a keloid, which is a type of scar. It took a few weeks, maybe a month to go away. I applied every night and washed thoroughly in the morning. Make sure to moisturize the area and don't pick at it - touch it if you haven't washed your hands!
Probably scar tissue. Once its healed over, you can use mederma or BioOil to help make the scar tissue less noticeable.
Getting a piercing done for a second time always hurts more, because the new scar tissue that was used to heal it closed is harder therefor it'll hurt more.
Everybody heals differently, but it is likely that you will be left with a little dot that will look like a slightly large pore.
There will be more scar tissue than normal, but otherwise no.
Yes quit using whatever you are using to clean the piercing and just rinse the piercing under running water after your shower daily. Do not put anything else on the piercing and the lump and scar will go away after 3 or more weeks of just water rinsing.
it may never go away, just like any other scar. to reduce scarring you can use scar reduction cream (mederma, ect)
A bump near a new piercing is most likely a Keloid. A Keloid is basically a scar cause by condensed scar tissue from the piercing. I have a few due to piercings, and I've noticed that as time goes on, the Keloids become less noticeable and irritating. It's very common and nothing to worry about. However, if it begins to enlarge or hurt really bad, seek medical attention as you may have an infection.
Well it depends on lots of factors like how long you've had the piercing. They don't usually close up but will become very small and not be obvious. Once a piercing is fully healed scar tissue has formed around it and scar tissue does not heal over. If you are serious about wanting the hole closed you would have to cut it and let it heal which will cause more scar tissue to form in the hole but I would talk to a doctor about it. Don't do it to yourself.