Scarring due to infections or injury may leave scars which may render the affected skin uneven. Scars may take time to resolve.
In fact, most of them stay for a long time depending on how severe the scarring is. Apply Vitamin E cream to moisturize the area.
Moisturizers may even out the skin and keep the skin smooth. This may improve the appearance of the skin. I would not suggest that you apply any medicated creams on the area.
If the symptoms persist, you would need to consult your doctor.