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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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Ichthyosis prematurity syndrome
Ichthyosis prematurity syndrome is a rare, genetically recessive skin disorder in which infants are born prematurely with abnormal skin covered...
Pityriasis rosea
Pityriasis rosea is a self-limiting rash, which resolves in about 6–10 weeks.
Cowden syndrome
Cowden syndrome is a rare inherited condition characterised by overgrowths including mucocutaneous tissues with increased risk of malignancies.
Acanthosis nigricans
Acanthosis nigricans is a skin condition characterised by darkening and thickening of the skin (velvety overgrowth of the epidermis).
Skin reactions to COVID-19 vaccines
There are a spectrum of skin reactions following COVID-19 vaccination including local site reactions, urticaria, a delayed large local reaction...
Patch tests
Patch testing is undertaken for the investigation and confirmation of substances that produce allergic contact dermatitis.
Keratoacanthoma
Keratoacanthoma (KA) is a common, rapidly growing, locally destructive skin tumour.
Linear IgA bullous disease
Linear IgA bullous disease is a rare, autoimmune, blistering disease which blisters form on the skin and mucous membranes.
Sjögren syndrome
Sjögren syndrome is an autoimmune disease that causes dry eyes and dry mouth as it mainly affects secretory glands of...
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).
Fibrous papule of the nose
A fibrous papule of the nose is a common and harmless skin lesion.
Phytophotodermatitis
Phytophotodermatitis is a skin reaction that occurs when certain plant chemicals come into contact with the skin, and there is...
Non-dermatophyte mould onychomycosis
Non-dermatophyte mould onychomycosis (NDMO) is an opportunistic fungal nail infection (onychomycosis) caused by moulds.
Carcinoid syndrome
Carcinoid syndrome is characterised by episodic cutaneous flushing, diarrhoea, and wheezing.
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.
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.
