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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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Angioedema
Angioedema is red painful swelling in the subcutaneous tissue, triggered by an allergic reaction or medication.
Lichen planopilaris
Lichen planopilaris is an uncommon inflammatory condition that can lead to permanent hair loss.
Plasma cell mucositis
Plasma cell mucositis is a rare, benign, inflammatory disorder of the upper aerodigestive tract that shares clinical and histologic features...
Polymorphic light eruption
Polymorphic light eruption, also known as polymorphous light eruptions, is a seasonal photodermatosis occurring in spring and early summer.
Discoid lupus erythematosus
Discoid lupus erythematosusis a chronic scarring skin condition characterised by persistent scaly plaques on the scalp, face, and ears which...
Kyrle disease
Kyrle disease is a papulonodular mucocutaneous disorder and is characterised by transepidermal elimination of keratin onto the skin surface.
Generalised eruptive keratoacanthomas
Generalised eruptive keratoacanthoma of Grzybowski (Grzybowski syndrome) is a rare variant of keratoacanthoma characterised by the presence of hundreds to...
Pyoderma gangrenosum
Pyoderma gangrenosum (PG) presents as a rapidly enlarging, very painful ulcer and is diagnosed by its characteristic appearance and the...
Lipodystrophy
Lipodystrophies are conditions that involve the loss of body fat, in particular subcutaneous adipose tissue in the absence of malnutrition...
Keratosis pilaris
Keratosis pilaris is a very common, harmless form of bumpy dry skin characterised by plugged hair follicles.
Rosacea
Rosacea is a chronic facial rash that most often starts between the age of 30 and 60 years.
Scabies
Scabies is a very itchy rash caused by a parasitic mite that burrows in the skin surface.
Sarcoidosis
Sarcoidosis is a multisystem disease characterised by granulomas in various organs.
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...
Folliculitis barbae
Folliculitis barbae is an itchy papulopustular eruption of hair follicles in skin areas prone to shaving and is associated with...
World Health Days
Diabetes Month
November 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
The 8th of November 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
The 3rd of November is World Jellyfish Day.
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, superficial, highly contagious bacterial skin infection characterised by pustules and honey-coloured crusted erosions.
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 transmissible skin disease caused by the ectoparasitic mite Sarcoptes scabiei var.
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.
