<rosacea glossary>

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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