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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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Onchocerciasis
Onchocerciasis is a chronic and progressive skin, eye, and neurological disease caused by Onchocerca volvulus, a filarial nematode.
Cronkhite-Canada syndrome
Cronkhite-Canada syndrome is a rare, sporadic disorder characterised by nail dystrophy, hyperpigmentation, hair loss and generalised gastrointestinal polyposis.
Piebaldism
Piebaldism is a rare inherited disorder of pigmentation characterised by patchy leukoderma (white skin) and white hair (poliosis) present at...
Irritant contact dermatitis
Irritant contact dermatitis is a form of skin inflammation caused by contact with substances and/or environmental factors that injure the...
Lynch syndrome
Lynch syndrome is the most common inherited syndrome that predisposes to cancer.
Protein-energy malnutrition
Protein-energy malnutrition is due to insufficient intake or absorption of protein, energy, and micronutrients to meet metabolic demand.
Diffuse dermal angiomatosis of the breast
Diffuse dermal angiomatosis of the breast is a rare but distinctive disorder of the skin presenting with painful ulceration and...
Skin changes in pregnancy
During pregnancy there are marked changes in sex hormones, the immune system, and the cardiovascular system, and this can lead...
Pellagra
Pellagra is a systemic disease caused by vitamin B3 (niacin) deficiency.
Carotenoderma
Carotenoderma is the yellow-orange discolouration of the skin due to carotenaemia (American spelling: carotenemia), a condition in which the blood...
World Health Days 2021
Venous Disease Awareness Month
September 2021 is Venous Disease Awareness Month.
Infantile haemangioma
Infantile haemangioma, also known as a strawberry naevus, is the most common benign vascular skin tumour in children.
Lymphoma Awareness Day
15th September 2021 is Lymphoma Awareness Day.
Primary cutaneous follicle centre lymphoma
Primary cutaneous follicle centre lymphoma is a low-grade primary cutaneous B-cell lymphoma, defined as a lymphoma of germinal centre B-cells...
National Eczema Week
September 13th-19th is National Eczema Week in the United Kingdom.
Atopic dermatitis
Atopic dermatitis, the most common inflammatory skin disease worldwide, presents as generalised skin dryness, itch and rash.
Vascular Disease Awareness Month
September 2021 is Vascular Disease Awareness Month.
Venous insufficiency
Venous insufficiency occurs when the normal flow of blood from the superficial veins to the heart via the perforating deep...
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 (HFM) is a common mild and short-lasting viral infection most often affecting young children.
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 rash caused by a parasitic mite that burrows in the skin surface.
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