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DermNet (previously DermNet NZ) is the world’s leading free dermatology resource. 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.

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Hereditary coproporphyria

Hereditary coproporphyria (HCP) is a rare subtype of porphyria caused by a defect in the CPOX enzyme.


Tralokinumab is a fully human IgG4 monoclonal antibody used to treat moderate to severe atopic dermatitis.

Azelaic acid

Azelaic acid is used as a topical treatment for mild to moderate acne; it may also be useful in treating...


Nemolizumab is a biological therapy used to treat moderate to severe prurigo nodularis and atopic dermatitis.

Emollients and moisturisers

Components of moisturisers include emollients, occlusives, and humectants.

Generalised pustular psoriasis

Generalised pustular psoriasis (GPP) is a rare, severe form of pustular psoriasis.

Scalp psoriasis

Scalp psoriasis is characterised by red, thickened patches or plaques with overlying silvery-white scales, affecting part or all of the...


Lebrikizumab is a novel, high-affinity, monoclonal antibody or biological agent that selectively inhibits interleukin 13 for the treatment of atopic...

Rubinstein-Taybi Syndrome

Rubinstein-Taybi syndrome (RTS), or broad thumb-hallux syndrome, is a rare genetic condition with a broad phenotypic spectrum that ranges from...


An antiperspirant is a chemical agent that reduces perspiration or sweating.

Fungal nail infections

Fungal nail infections (onychomycosis) make up the majority of all nail disease (over 50%).

Antifungal drug resistance

The acquired resistance of dermatophyte fungi to antifungal medication is on the rise.


Atopy refers to the genetic predisposition of experiencing an exaggerated immune response to allergens via the overproduction of immunoglobulin E...

White nail

A finger or toenail that is partially or completely white in colour (leukonychia) has several potential causes.

Childhood infections

Meningococcal disease

Meningococcal disease is an illness caused by the bacteria Neisseria meningitidis.


Measles is a highly contagious viral infection causing fever and a rash. Early symptoms are like the common cold, with...


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.

Herald patch: pityriasis rosea
Pityriasis rosea

Pityriasis rosea is a viral rash which lasts about 6–12 weeks. It is characterised by a herald patch followed by...


Impetigo is a common, superficial, highly contagious bacterial skin infection characterised by pustules and honey-coloured crusted erosions.


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, self-limiting, viral infection that causes blisters on the hands,...

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 is a transmissible skin disease caused by the ectoparasitic mite Sarcoptes scabiei var.

Slider: Childhood infections


Supported by and contributed to by New Zealand Dermatologists on behalf of the New Zealand Dermatological Society Incorporated.

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