Gingivitis in only one tooth?i have a specific tooth that about once in 10days will bleed a little, out of the blue without brushing.it is very little but always the same tooth.and when i brush it's the only gum that bleeds a little,the others don't?

Yes, it is possible. You may have a localized issue such as a periodontal pocket or a carious lesion that is trapping food and bacteria in that specific area. Please see a local dentist for an evaluation.

Is it possible? Absolutely. There are other reasons for gum bleeding such as overly aggressive cleaning, genetic defect, blood dyscrasia, malocclusionnot cleaning between teeth, toothbrush abrasion, etc. Statistically if there's one compromised area that you can see, there are more compromised area that you don't see but that your trained Dentist will recognize. See Dentist/Periodontist now.