Rosacea is a skin condition characterized by facial redness and small, pus-filled bumps. It commonly affects middle-aged women with fair skin and may be mistaken for acne. Symptoms include facial redness, swollen red bumps, and visible blood vessels. 

Causes include genetics, environmental triggers like sun exposure, hot or cold weather, spicy foods, alcohol, stress, and certain medications. Treatments like antibiotics or anti-acne medication can help manage and reduce symptoms. Without treatment, rosacea tends to worsen over time.