- Clinical science
Rosacea
Summary
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, comedones 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.
Epidemiology
- Sex: ♀ > ♂
- Age range: 30–60 years
References:[1]
Epidemiological data refers to the US, unless otherwise specified.
Etiology
The cause of rosacea is not entirely understood; , but is especially associated with triggers that increase body temperature.
-
Trigger factors
- Hot weather, hot drinks, spicy food
- Stress, alcohol, nicotine
- Demodex mites
References:[2][3]
Clinical features
There are four different clinical subtypes of rosacea:
-
Erythematotelangiectatic rosacea
- Facial flushing
- Persistent erythema of the face (together with telangiectasias)
- Papulopustular rosacea
-
Phymatous rosacea
- Skin and sebaceous glands thicken
- Inflammatory, widespread nodules
- Rhinophyma: enlarged, bulbous nose (almost exclusively in males)
- Similar changes may occur on the chin, forehead, cheeks, and ears
-
Ocular rosacea
- Conjunctival hyperemia (most common)
- Blepharitis (inflammation of the eyelid margin), stye (hordeolum externum), chalazion
- Dry eyes and foreign-body sensation
- Keratitis
In contrast to acne, comedones are NOT present!
References:[4][5]
Treatment
- Behavioral: avoid trigger factors (see "Etiology" above)
-
Medical therapy
- For erythema, flushing, skin sensitivity, xerosis:
- Topical brimonidine
- Topical oxymetazoline
- For papules and pustules:
-
Topical agents for mild disease
- Metronidazole (also for ocular rosacea)
- Azelaic acid
- Ivermectin
- Sodium sulfacetamide
-
Oral agents for moderate to severe disease and refractory disease
- Tetracyclines: e.g., doxycycline (also for ocular rosacea), tetracycline, minocycline
- Isotretinoin (first-line for phymatous rosacea)
-
Topical agents for mild disease
- For erythema, flushing, skin sensitivity, xerosis:
- Laser therapy: for erythema, telangiectasias, and phymatous rosacea
- Surgical therapy: for phymatous rosacea; includes electrocautery and dermabrasion
References:[4][6][7][8]