Since how many days are you having this problem?
Are you on any anticoagulants?
Do you have any nasal allergy?
If answer is no to the last two questions then probably you might be having some haemangioma (these are benign lesions arising in the skin or mucosa) in the nose which bleeds on touch, for which you need to consult your ENT specialist and get it treated. Any doubts you are welcome.
about a week,sometimes happens after three days,and always it doesn't happen when i just touch...sometimes without any special reason!!i've had it four times!!!!but i think it's not permanent!!!is it essential to say this problem to specialist?
I feel, it is always better to get a diagnostic nasal endoscopy done so that the problem can be identified and rectified.
thank you,thanks a million for your help!! wish you have good time...