Thanks for posting your query. His p;roblem could be a due to condition called macular atrophy where one will have slight depression
on the face or trunk. The cause was attributed to a tick bite
. The problem should be confirmed by a dermatologist
. If needed, a skin biopsy
should be done to confirm the diagnosis. There are many modalities are available as treatment. But, once there is depression, only fillers may help to fill the gap.