Police say a disturbance happened near the town centre Loon Chen Chinese food outlet around 10.45 pm on Sunday.
A spokesman for Police Scotland said: “Approximately five persons were involved in the disturbance after which a 50-year-old male was assaulted and knocked to the ground.
“As a result of the assault the male was conveyed by ambulance to the Cumberland Infirmary and treated for minor soft tissue damage to his face and head.”
Potential witnesses are asked to contact police on the 101 non-emergency telephone number.
NEWSDESK: 01461-202417