The Celebrity Big Brother winner was shown bruised and bleeding after fighting off a rival, reports The Mirror.
Doherty, 52, was bleeding heavily from a cut above the eye after a fight with his cousin Johnny Joyce, 21.
The two exchanged abuse after a fight broke out between the family members in a shopping centre car park last June.
Doherty pleaded guilty to affray last Friday. He is on bail and will be sentenced on January 6.
Doherty was voted the winner of Channel 5's debut Celebrity Big Brother in September.
He is due to swap families with fellow contestant Sally Bercow in Channel 5's upcoming documentary When Paddy Met Sally.
Watch Paddy Doherty discuss his Celebrity Big Brother win below: