Terms and definitions associated with the symptoms and treatment of rosacea, ocular rosacea, acne, eczema, dermatitis and psoriasis.
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Nail Psoriasis – can affect both the toenails and fingernails. Psoriatic changes in nails range from mild to severe, generally reflecting the extent of psoriatic involvement of the nail plate, nail matrix ( tissue from which the nail grows), nail bed (tissue under the nail), and skin at the base of the nail. Nail psoriasis is frequently associated with psoriatic arthritis.
National Psoriasis Foundation: A nonprofit organization committed to educating and empowering people in the treatment of the symptoms of psoriasis and psoriatic arthritis.
Neurodermatitis – occurs because of repeated scratching, may appear as small, and flat areas (plaques) of various sizes, 1 to 10 inches (2.5 to 25 centimeters) in diameter. These areas have definite margins that have become thick and leatherlike (lichenified). This type of dermatitis is also known as lichen simplex chronicus can occur when something such as a tight garment rubs or scratches your skin. This irritation may lead you to rub or scratch your skin repeatedly. Common locations include ankles, wrist, outer forearm or arm, and the back of your neck.
NeoDecadron® – by Merck, (Neomycin Sulfate-Dexamethasone Sodium Phosphate) is a topical corticosteroid-antibiotic solution for ophthalmic use. Sometimes used in the treatment of ocular rosacea.
Neuropeptides – A type of molecule found in nerve tissue (eg, endorphins).
Nickel Allergy Dermatitis – allergic or irritant dermatitis/eczema resulting from contact with nickel. The symptoms are more common in women, because they are more likely to have pierced ears than men, although this is changing. The degree of allergy varies. Some people develop dermatitis (also called eczema) from even brief contact with nickel-containing items, while others develop symptoms only after many years of skin contact with nickel.
Nicotinamide Papulex® – (Pharmagenix) Gel, nicotinamide 4%. A topical treatment for inflammatory acne vulgaris.
Nizoral® – a cream which contains as its active ingredient ketoconazole, an antifungal preparation. It is used in the treatment of sebborrheic dermatitis with the rationale that sebborrheic dermatitis is caused by a fungus which lives on everyone’s skin and is normally non-pathological.
Nodules – Nodules are solid, raised bumps on the skin, greater than 10 millimeters in diameter.
Non-Comedogenic – (pronounced non-coh-me-dough-jen-ic) refers to anything that will not clog pores or produce comedones, commonly called blackheads.
Noritate – a topical treatment for rosacea which works due to the anti-inflammatory action of Metronidazole (an antibiotic), its active ingredient. Noritate is meant to help reduce the spots and redness of rosacea through its anti-inflammatory action. Thus it may help to control rosacea, but not cure it. Metronidazole is also the active ingredient in Rozex gel, Metro cream and Metrolotion, but Noritate is less irritating. Its name is short for “no-irritate” (non-irritating).
Novodoxylin® – An oral antibiotic which is used in the treatment of a wide variety of bacterial infections. It is often prescribed for rosacea. Also sold under the brand names: Vibra-Tabs®, Vibramycin®, Monodox®, Doxycycline®, Doryx®.
Non-contagious – incapable of being transmitted from person to person.
Noritate – a topical treatment used to treat the symptoms of rosacea. It works due to the anti-inflammatory action of Metronidazole (an antibiotic) which is its active ingredient. Noritate is meant to help reduce the spots and redness of rosacea. It may help to control rosacea, but not cure rosacea. Metronidazole is also the active ingredient in Rozex gel, Metro cream and Metrolotion, but Noritate is less irritating. Its name is short for “no-irritate” (non-irritating).
Novodoxylin® – An oral antibiotic which is used in the treatment of a wide variety of bacterial infections. It is often prescribed as a treatment for rosacea. Also sold under the brand name(s): Vibra-Tabs®, Vibramycin®, Monodox®, Doxycycline®, Doryx®
NSAIDs – Nonsteroidal anti-inflammatory drugs, are a class drugs with analgesic and fever-reducing effects and in higher doses an anti-inflammatory effect. As analgesics, NSAIDs are are non-narcotic. The most common types of NSAIDs are aspirin, ibuprofen, and naproxen. May also be abbreviated as NAIDs, or can be referred to as nonsteroidal anti-inflammatory agents/analgesics (NSAIAs) or nonsteroidal Anti-inflammatory medicines (NSAIMs).
Nummular Dermatitis – (Discoid Dermatitis) “discoid” or “nummular” dermatitis, which means coin or disc-shaped patches which commonly occur on the lower leg. They can be several centimetres across, or as small as two millimetres. The skin between the patches is usually normal, but may be dry and irritable. Discoid eczema may be extremely itchy, or scarcely noticeable.
Nummular Eczema – another term for nummular dermatitis, also called discoid eczema or gravitational eczema is usually found in adults and appears suddenly as a few coin shaped areas of red skin; normally on the trunk or lower legs. It may look similar to ringworm.
Nutracort® – (Hydrocortisone) a low potency steroid medication used for the treatment of itching and inflammation associated with a wide variety of skin conditions such as eczema, allergic skin conditions, dermatitis, and seborrhea. Also sold under the brand names: Cetacort®, Anusol-HC®, Hytone®, Cort-Dome®, Cortenema®, Cortifoam®, Cortaind®, Lanacort®, Locoid®, Westcort®.