Assuming this just happened... yes. The visible bruise is not so important, it's the possibility of internal bruising (concussion) that can be serious, even fatal.
yes
Yes it is you should see your doctor immediatly I bruised my collarbone 3 times and with 2 of them I ended up with cancer I fought it really hard and managed to come through but I almost died. See your doctor ASAP.
aye yer sound
Did you get in a fight? Because that is really the only thing that comes to mind, unless you got into and accedint of some sort. But either way, you should go see a doctor asap
That really depends upon the condition of the patient- I'd give it a week or two before I'd try to see a doctor about it.
Maybe you hit/bruised them or lost circulation...you should get that checked out.
you could have bitten it really hard!
If it seems like it's just a really bad bruise, I'd wait a week and see a doctor if it hasn't gotten better. If there are any symptoms that are unusual for a bruise, I'd play it safe and see a doctor now. Oh, and stop touching it.
If it's a lot of pain you really need to see a doctor and worry about inconvenience and money later! If not too bad and no real trouble breathing; don't worry and rest to let it heal. It is more likely to be a cracked or bruised rib then something internal.
If they are really bad, you should get help from a doctor.
If you have a goose egg on your forehead and you have been injured or hit in the last day or so you may have a hematoma or a hit to the head. This may cause a minor concussion. If the swelling does not go down or stays the same for a good amount of time visit your doctor. I a bruise remains for a couple of days after receiving the injury, you don't really nee to contact your doctor.
If you tap for a really long time on someone's forehead, they will slowly go insane. I've seen it happen
Wince a lot and see a doctor.