yes it is as it may get infected and then will spread and that means its an illness go to the doctors and get it checked out.it is a form of mouth disorder
yes, if your ulcer is in tour mouth or throat, if the ulcer is in your stomach and its bleeding, some goes down tour intestines and comes out as black stools, the portion that doesn't go down and accumulates in the stomach is vomited out bright red.
Depends on the disease, but I wouldn't suggest it answer would be go see a doctor.
Goggles or Costume (as in swimming costume/swimsuit) or armband(s) for little children ;)
Mouth ulcers can be caused by many things. Stress, lots of citrus fruit, medications, bad immune system. Best to go to an oral surgeon for a correct diagnosis. Regular doctors don't have enough training in this area. I Reccomend If The Ulcer Is Painful pull pack your lip so you can see it in the mirror and make sure the mirror is cold and then place your mouth and ulcer on to the mirror and keep it there a few seconds then spit a couple of times and it should numb the pain for a few minutes i tried it and it works.
Try eating ' jakemans throat and chest' sweets. They get rid of them fast and pain free.The term mouth ulcer is generally very broad and have diverse types. As most things go, a mouth ulcer is generally applied to anything that causes sores in or around your mouth. The two most common ones are cold sores and canker sores.So, just use common home remedies for either one. One to try: Swish twice a day with Maalox.
go to the docter
yes you may go swimming, but be careful not to put any water in your mouth, as this is a health hazard, its best to give it 2-3 days oh healing before entering a swimming pool, normal water pool is fine, just not chlorine pools.
Try taking vitamin B supplements, or eating foods rich in vitamin B Can also be stress related so try to reduce stress - sometimes people get mouth ulcers after drinking alcohol and carbonated drinks, or eating acidic foods
you can't go swimming!
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A good way to get rid of Ulcer is to pour warm water in a glass with quite a lot of salt and mix it until it dissolves, Then gurgle in your mouth for about 15 seconds(Which might sting a bit)This will then numb the pain and also will heal it in a week if you do this every day