There are reports that alcohol can cause rosacea to flare up. However, alcohol may not be the only cause as to why someone might have worsening rosacea. Women who drink alcohol regularly may be more likely to get rosacea and have worsening symptoms, but rosacea can also worsen with sun exposure, stress, spicy foods, or hormonal changes. It is most likely that alcohol causes your immune system to be overworked, which then results in a rosacea flare-up.