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DermNet™

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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Obesity-associated lymphoedematous mucinosis

Obesity-associated lymphoedematous mucinosis (OALM) is a rare and recently identified form of pretibial dermal mucinosis that affects individuals who are...

Neutrophilic sebaceous adenitis

Neutrophilic sebaceous adenitis is a rare inflammatory dermatosis that most commonly affects the face and torso of young men.

Trichoepithelioma

Trichoepithelioma is a rare benign skin neoplasm that arises from hair follicles.

Polypodium leucotomos extract

Polypodium leucotomos extract (PLE) comes from a tropical fern plant grown in Central and South America.

Dihydroxyacetone

Dihydroxyacetone (DHA) is a ketotriose monosaccharide commonly used as the active ingredient in sunless tanning agents (fake tan).

Common terminology criteria for adverse events due to cancer therapy

The common terminology criteria for adverse events (CTCAE) describes a grading system for adverse event reporting associated with cancer therapy.

Abrocitinib

Abrocitinib (Cibinqo®) is a selective oral Janus kinase 1 inhibitor used for the treatment of moderate-to-severe atopic dermatitis.

Autonomic denervation dermatitis

Autonomic denervation dermatitis is an uncommon localised eczematous eruption around a surgical incision site.

Bed bugs

The bed bug is a flat, small, wingless parasitic insect that bites through the skin to feed on human blood.

Pseudoepitheliomatous keratotic and micaceous balanitis

Pseudoepitheliomatous keratotic and micaceous balanitis (PKMB) is a rare skin condition that affects the penis.

Nevus sebaceous

A nevus sebaceous (sebaceous naevus) is a common type of birthmark affecting 0.3% of live births.

Trachyonychia

Trachyonychia is characterised by brittle nails that show diffuse longitudinal ridging and can be accompanied by pitting, loss of lustre,...

Aquagenic wrinkling of the palms

Aquagenic wrinkling of the palms is a rare condition characterised by transient oedematous skin of the palms after contact with...

Deucravacitinib

Deucravacitinib is a selective oral tyrosine kinase 2 inhibitor for the systemic treatment of moderate to severe plaque psoriasis and...

Facial discoid dermatosis

Facial discoid dermatosis (FDD) is a rare dermatosis that presents as discrete and persistent pink-orange papulosquamous lesions isolated to the...

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.

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

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, 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

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

Slider: Childhood infections

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

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