Thanks for providing more information.
Well as you describe,this bleeding that started during cleaning of the ear or picked out scab resulted from injury to the external ear canal.
And it may be possible that there may be some hair boil under the scab which has started bleeding.
And now any bleeding which is persistent more than 20 minutes may require any urgent medical attention.
Even it may be possible some blood has gone inside the ear which needs to be cleaned out.
So if possible visit ER for prompt management rather than try any self care measures as it can aggravate his symptoms and cause complications like eardrum perforation,infection.
Also his blood pressure should be monitored.
I hope this helps.
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