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DermNet 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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Fixed drug eruption
Fixed drug eruption is a distinctive cutaneous allergic reaction that characteristically recurs at the same site(s) on re-exposure to the...
Brachioradial pruritus
Brachioradial pruritus is a localised form of neuropathic cutaneous dysaesthesia on one or both upper limbs.
Median canaliform nail dystrophy
Median canaliform nail dystrophy is a clinically characteristic change in the nail plate presenting as a midline longitudinal furrow or...
Tuberculids
A tuberculid is a hypersensitivity reaction presenting as skin changes in association with tuberculosis elsewhere in the body.
Chilblains
Chilblains are tender and/or itchy bumps on acral sites following exposure to damp, cold, non-freezing conditions causing a localised form...
Infantile haemangioma
Infantile haemangioma, also known as a strawberry naevus, is the most common benign vascular skin tumour in children.
Pyogenic granuloma
Pyogenic granuloma is an acquired benign proliferation of capillary blood vessels of the skin and oral cavity.
Aloe vera and the skin
Aloe vera is used by the general public, traditional healers, and some health professionals for skin disorders.
Red ear syndrome
Red ear syndrome (RES) is an uncommon disorder that presents with intermittent attacks of pain and reddening of one or...
Palmoplantar keratoderma Nagashima type
Palmoplantar keratoderma Nagashima type is the most common form of diffuse hereditary palmoplantar keratoderma in Asians.
World Health Days 2021
World Chagas Disease Day
The 14th of April is World Chagas Disease Day.
American trypanosomiasis
American trypanosomiasis, commonly known as Chagas disease, is a systemic infection caused by the zoonotic protozoan parasite Trypanosoma cruzi.
World Health Day
The 7th of April 2021 is World Health Day.
Self skin examination
Skin cancer is the most common of all cancers, afflicting perhaps two-thirds of white-skinned New Zealanders and many others throughout...
World Tuberculosis Day
The 24th of March 2021 is World Tuberculosis Day.
Cutaneous tuberculosis
Cutaneous tuberculosis (TB) results from skin infection with Mycobacterium tuberculosis.
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 (pyoderma).
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 epidermal papules called mollusca.
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.
Guidelines for authors
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