Rosacea is a persistent facial eruptions of
unknown cause, characterized by erythema and pustules. Sebum secretion
is normal in this condition.
Rosacea becomes progressively worse in many of those affected. The real cause of rosacea is now thought to be a tendency to flush and blush in a person with sun damage. Sun damages the supporting fibers of the small blood vessels just under the surface of the skin, allowing the vessels to stretch out (become permanently dilated). The damaged blood vessels leak fluid when flushing occurs, resulting in blotchy red areas. Swelling occurs, but is not usually so prominent to be very visible. The first sign most people see are small red pimples and pustules (pus-filled whiteheads). The redness can come and go and may be tender, inflamed and sensitive to the touch. Later, the skin tissue can swell and thicken. Eventually the redness and swelling can become permanent.
Triggers that cause episodes of flushing and blushing.
1. Exposure to temperature extremes can cause the face to become flushed
2. Strenuous exercise
3. Heat from sunlight
4. Severe sunburn
6. Cold wind
7. Moving to a warm or hot environment from a cold environment
8. Some foods and drinks that can trig the condition include alcohol, foods high in histamine and spicy food.
9. Certain medications