- Clinical science
Rosacea is a chronic inflammatory skin disease that may be triggered by a number of factors (e.g., alcohol, stress). The etiology is unclear; however, the disease is more common in females and middle-aged individuals with fair skin. The disease presents with central facial erythema, telangiectasias, and papules/pustules. In severe cases, the nose develops a large, bulbous shape (rhinophyma). In contrast to acne, are not present. Treatment options include the avoidance of triggers, topical agents (e.g., metronidazole, brimonidine) for mild disease and oral agents (e.g., metronidazole) for more severe disease.
- Sex: ♀ > ♂ 
- Age range: 30–60 years 
Epidemiological data refers to the US, unless otherwise specified.
- Erythematotelangiectatic rosacea
- Papulopustular rosacea
- Phymatous rosacea
- Ocular rosacea
In contrast to acne, comedones are NOT present in patients with rosacea.
- Lifestyle modifications: avoid trigger factors (see "Etiology" above)
- Medical therapy
- Laser therapy: for , , and phymatous rosacea
- Surgical therapy: for phymatous rosacea; includes electrocautery and dermabrasion