Some of the most common rosacea triggers include sun exposure, emotional stress, hot or cold weather, wind, alcohol, spicy foods, heavy exercise, hot baths, heated beverages and certain skin-care products.

Some of the symptoms of rosacea include:

• General reddening of the skin.
• Bumps and pimples.
• Small dilated blood vessels that appear as red lines on the skin
• enlargement of tissue, this is most common in the nose, a condition called “rhinophyma”

Rosacea is not considered an infectious disease, and there is no evidence that it can be spread by contact with the skin or through inhaling airborne bacteria. The effectiveness of antibiotics against rosacea symptoms is widely believed to be due to their anti-inflammatory effect, rather than their ability to destroy bacteria.