nose bleeds can burn and make new nose peircings sore but it doesnt make a difference for a healed one
usually redness and wetness is a sign that its nose is sore. sometimes rubbing and scratching means it too.
Yes you can get a cold sore under a nose if you have a runny nose because when you wipe your nose so much the skin it starts to hurt and becomes dry and not good.you could also just get a sore if its winter.
You can try lysine but if that doesn't help then you may want to see your doctor and talk to them about antiviriral medication and to make sure that it's a cold sore.
Cannabis
Common cold
You could have the oral form of Herpes, or what is often called a cold sore. Don't pinch or mess with it. Consult your doctor or pharmacist. They make many over the counter cold sore remedies.
runny nose, sore throat a temperature.
Yes
If your nose is sore, logically, there must be a reason. If you do not know the reason them seek medical advice.
yes!
If that was all you ever did, it would make you skinny sooner or later (shortly before you died). Otherwise, the only effects it will have are making your nose very sore.