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DermNet NZ is the world’s free resource and authority on all things skin. We help thousands of people make informed, evidence-based decisions on how to care for skin conditions, by providing reliable information at the click of a button.
Supported by and contributed to by New Zealand Dermatologists on behalf of the New Zealand Dermatological Society Incorporated.
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Keratoacanthoma
Keratoacanthoma (KA) is a common, rapidly growing, locally destructive skin tumour.
Sjögren syndrome
Sjögren syndrome is an autoimmune disease that causes dry eyes and dry mouth as it mainly affects secretory glands of...
Non-dermatophyte mould onychomycosis
Non-dermatophyte mould onychomycosis (NDMO) is an opportunistic fungal nail infection (onychomycosis) caused by moulds.
Skin conditions relating to HIV infection
Skin conditions conditions are extremely common during HIV infection and will affect approximately 90% of all people living with HIV.
Linear IgA bullous disease
Linear IgA bullous disease is a rare, autoimmune, blistering disease which blisters form on the skin and mucous membranes.
Phytophotodermatitis
Phytophotodermatitis is a skin reaction that occurs when certain plant chemicals come into contact with the skin, and there is...
Erythema palmare hereditarium
Erythema palmare hereditarium (EPH) is an inherited tendency to develop persistent redness of the palms and fingertips.
Contact allergy to hydroperoxides of limonene and linalool
Limonene and linalool are fragrance chemicals extracted from the peel of citrus fruits (limonene) and herbs, flowers, and woods (linalool).
Plant dermatitis
Plant dermatitis is an inflammation of the skin caused by topical contact with a plant or plant constituent.
Fibrous papule of the nose
A fibrous papule of the nose is a common and harmless skin lesion.
Carcinoid syndrome
Carcinoid syndrome is characterised by episodic cutaneous flushing, diarrhoea, and wheezing.
Folliculitis decalvans
Folliculitis decalvans is a chronic, neutrophilic inflammation that results in scarring hair loss.
Azathioprine and mercaptopurine
Azathioprine is an antimetabolite thiopurine analogue drug that interferes with DNA synthesis and suppresses the immune system response.
Laterothoracic exanthem
Laterothoracic exanthem is an uncommon rash involving the sides of the trunk in young children.
Behçet disease
Behçet disease (BD) is a rare, multi-system condition characterised by recurrent painful oral and genital ulcers, a variety of skin...
World Health Days 2021
Diabetes Month
November 2021 is World Diabetes Month.
Diabetic foot ulcer
A diabetic foot ulcer is a skin sore with full thickness skin loss often preceded by a haemorrhagic subepidermal blister.
Necrobiosis lipoidica
Necrobiosis lipoidica is a rare granulomatous skin disorder typically described on the shin of diabetics.
National Oral Health Day
8 November 2021 is National Oral Health Day in New Zealand.
Transient lingual papillitis
Transient lingual papillitis is a common painful inflammatory condition affecting one or several fungiform papillae on the tongue.
World Jellyfish Day
3 November 2021 is World Jellyfish Day.
Sea bather's eruption
Sea bather's eruption is an itchy rash of the covered skin that appears soon after swimming in the sea, caused...
Childhood infections
Meningococcal disease
Meningococcal disease is an illness caused by the bacteria Neisseria meningitidis.
Measles
Measles is a highly contagious viral infection causing fever and a rash. Early symptoms are like the common cold, with...
Chickenpox
Chickenpox is a highly contagious viral infection that causes an acute fever and blistered rash, mainly in children.
Fifth disease
Erythema infectiosum is a common childhood infection causing a slapped cheek appearance and a rash.
Pityriasis rosea
Pityriasis rosea is a viral rash which lasts about 6–12 weeks. It is characterised by a herald patch followed by...
Impetigo
Impetigo is a common acute superficial bacterial skin infection characterised by pustules and honey-coloured crusted erosions ('school sores').
Boil
A boil (also called a furuncle) is a deep form of bacterial folliculitis (infection of a hair follicle).
Hand foot and mouth disease
Hand, foot, and mouth disease (HFMD or HFM) is a common mild and short-lasting viral infection most often affecting young...
Papular acrodermatitis
Papular acrodermatitis of childhood is a characteristic response of the skin to viral infection in which there is a papular...
Molluscum contagiosum
Molluscum contagiosum is a common viral skin infection of childhood that causes localised clusters of umbilicated epidermal papules.
VIral warts
A viral wart is a very common benign lesion caused by infection with human papillomavirus (HPV).
Head lice
Head lice are small, wingless insects that infest the human scalp.
Scabies
Scabies is a very itchy skin condition caused by a parasitic mite that burrows in the skin surface and results...
Guidelines for authors
Are you interested in writing for us? DermNet New Zealand is always looking for potential authors to write on new topics or to update existing ones. Potential authors interested in writing a new page are generally asked to write a topic page about a disease or condition, or a treatment, product or procedure.
