The exact cause of rosacea remains unknown, but several factors are believed to contribute to its development. These include:

• Abnormalities in the immune system: Dysfunction in the immune system may play a role in triggering inflammation and vasodilation (widening of the blood vessels) in the skin.
• Blood vessel abnormalities: Abnormalities in the blood vessels of the skin, such as vasodilation and increased permeability (compromised skin barrier function), may contribute to flushing and redness.
• Demodex mites: These microscopic organisms that naturally inhabit the skin may multiply in higher numbers in individuals with rosacea, potentially contributing to inflammation and skin irritation.
• Environmental triggers: Certain environmental factors can exacerbate symptoms, including sun exposure, extreme temperatures, wind, humidity, and pollution.
• Genetics: Individuals with a family history of the condition are more likely to develop it.
• Microorganisms: Bacteria, particularly Helicobacter pylori and certain species of the Demodex mite, have been implicated in the development of the condition.
• Neurovascular dysregulation: Dysfunction in the nervous system’s control of blood flow to the skin may contribute to flushing and persistent skin redness.

Several risk factors can increase the likelihood of developing rosacea, including:

• Age (between the ages of 30 and 50)
• Certain medications (corticosteroids and drugs that widen blood vessels)
• Diet (consumption of alcohol, spicy foods, and hot beverages)
• Exposure to sunlight, heat, cold, wind, humidity, and pollution
• Gender (more prevalent in women, while men often experience more severe symptoms)
• Underlying health conditions (gastrointestinal disorders, autoimmune diseases, and hormonal imbalances)
• Use of harsh skincare products, abrasive exfoliants, and alcohol-based toners