What causes scars
In the case where acne progresses without effective treatment, then its topical destructive process blocks the smooth healing progress of the lesion.
This is due to the fact that the essential factor of the healing process is the hair sebaceous follicle which cannot act properly under conditions of inflammation. In this case, following inflammation, the healing process is either inadequate or excessive and results in the growth or loss of skin tissue, resulting in scarring.
In patients with mild inflammation, the remaining lesions may just be erythema or pigmentations. In more severe cases, lesions are more intense and appear on the face, neck, shoulders, chest and back.
In a recent study, it was confirmed that inflammatory acne lesions in many cases, lead to the formation of atrophic scars. Twenty-two patients with acne participated and photographs were used to observe and record the progress of their scarring in a period of 12 weeks.
A total number of 104 scars were identified. According to the results, the most common type of scarring in patients with mild to moderate acne was icepick scars (69%), followed by boxcar scars (29%), while a much lower percentage was evident for rolling scars (2%).