The classic rosacea symptoms are transient redness (flushing) and inflammation, particularly on the nose and cheeks, and in certain cases on the chin and forehead. The redness is caused by an increased blood flow from capillaries located close to the surface of the skin. This type of skin is well oxygenated and doesn’t wrinkle.
The increased blood flow provokes a permanent dilation of surface capillaries, which become visible as thin red lines (telangiectases), forming webs on the nose and cheeks.
The proliferation of a species of mites called Demodex folliculorum – a type of parasite found in sebaceous glands and hair folicles – triggers a skin imbalance and the outbreak of inflammatory papules (raised solid red lesions) and pustules (papules with pus). This condition is called acne rosacea, and it is mostly observed in people over 30.
The inflammation worsens and the hypertrophy of the connective tissue (fibroblast hyperactivity) creates skin protuberances (tissue hyperplasia). This condition,
which once primarily affected men, is called rhynophyma. Only surgery can fix this problem.
Since the advent of retail sales of AHAs (1992), consumers often have abused those products and aggravated their condition. Rosacea can be controlled by avoiding factors that trigger flushing (erythema) and by using proper skincare products. Here’s a list of triggering factors: