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Articles & Advice | Glossary of Common Rosacea Medical Terms

Glossary of Common Rosacea Medical Terms

By Rosacea.org

Blepharitis: Inflammation of the eyelids.

Chalazion: A cyst on the eyelid due to plugging of the meibomian glands, fat-secreting glands of the eyes.
Comedone: A plugged hair follicle. May be open (blackhead) or nearly closed (whitehead).
Controlled study: An experiment or clinical trial that includes an untested comparison group, referred to as a "control group."
Cutaneous: Pertaining to the skin.
Double-blind: A research procedure in which neither the patient nor the investigator knows who is receiving the experimental substance or procedure and who is receiving a placebo. Done to avoid bias in the study.
Edema: Swelling from abnormally large amounts of fluids in the tissues.
Erythema: Abnormal redness of the skin.
Erythematotelangiectatic rosacea: Subtype 1 rosacea, characterized by flushing and persistent redness. Visible blood vessels may also appear.
Flushing: Transient redness of the face and neck.
Granuloma: A tumor-like mass or nodule of tissue.
Granulomatous rosacea: Variant of rosacea, characterized by hard yellow, brown or red papules or nodules.
Nodule: A small node that is solid and can be detected by touch.
Ocular rosacea: Subtype 4 rosacea, characterized by watery or bloodshot appearance, irritation, burning or stinging of the eyes.
Papule: A small, dome-shaped, solid, usually inflamed elevation of the skin.
Papulopustular rosacea: Subtype 2 rosacea, characterized by facial redness with bumps or pimples.
Paranasal: Alongside the nose.
Phymatous rosacea: Subtype 3 rosacea, characterized by thickening or growth of excess tissue, often around the nose.
Placebo: An oral or topical formulation without this active ingredient, used for comparison with the active medication in controlled clinical studies.
Plaque: Elevated red patch on the skin.
Pustule: A small elevation of the skin filled with a white substance.
Recalcitrant: Not responsive to treatment.
Rhinophyma: Enlargement of the nose with excess tissue, a common form of phymatous rosacea.
Subtype: A common pattern or grouping of signs and symptoms.
Subtype 1 rosacea: Erythematotelangiectatic rosacea, characterized by flushing and persistent redness. Visible blood vessels may also appear.
Subtype 2 rosacea: Papulopustular rosacea, characterized by facial redness with bumps or pimples.
Subtype 3 rosacea: Phymatous rosacea, characterized by thickening or growth of excess tissue, often around the nose.
Subtype 4 rosacea: Ocular rosacea, characterized by watery or bloodshot appearance, irritation, burning or stinging of the eyes.
Telangiectasia: Blood vessels visible through the skins

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