Hi nathan
chances of this red spot being cancerous in nature can only be confirmed by a complete clinical examination, so visit your nearest dentist soon. but check for any whitish pus like discharge from it which can rule out malignancy and can be due to abscess in the tooth. is there any decayed tooth near this red spot which can help in the diagnosis of the abscess ?

Wishing you better health
with regards
Dr Ankit

Hello there....There are many reasons for that...Do you have any history of injury to the tooth?or is your tooth decayed? either of the causes' the infection spreads to the apical part of tooth and would result in sinus...that intermittently keeps discharging pus and blood...you have to either get you tooth root canal treated or get it removed...
if you dont have any of the above mentioned causes' then the problem might be with your gums proper...Gingivitis is the inflammation of your gums that happens because of accumulation of the deposits over your teeth....You need to get your scaling done...Following which a gum astringent is prescribed that would take care of your bleeding gums... Consult your dental surgeon for further clinical evaluation and management...

Hi, please do get the spot or ulcer checked by a dentist. It may be a simple ulcer but itis always better to rule out a serious condition. Take treatment for the gingivitis as well otherwise it may result in bone loss and loss of teeth in a long run. Take care and reach me on 9848813162 if you need any information.

Hello,
Welcome to Healthcaremagic!
A chronic red spot on gums is a matter of concern. Try to put a little pressure in the spot and check if there is any whitish discharge from it. If so it is a sinus opening due to a chronic Periapical abscess due to an infected tooth. Please visit your local dentist for a Root canal treatment in this case
If you do not see any discharge, get a confirmatory biopsy done to rule out malignancy i.e cancer.
Hope this helps,
Thanks