Our mission

To make authoritative information about the skin available to anyone in the world with an internet connection.

DermNet NZ was founded 22 years ago by a group of Dermatologists from New Zealand. It has become a world-renowned resource of skin disease information.

Smoking — effect on the skin

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Smoking and the skin

Skin and hair are exposed to various environmental noxious agents, including tobacco smoke.

31 May

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Squamous cell carcinoma

Cutaneous squamous cell carcinoma (SCC) is a common type of keratinocytic or non-melanoma skin cancer.

16 January

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Hairy tongue

Hairy tongue is an unusual, harmless condition characterised by a "hairy" enlargement and discolouration of the filiform papillae.

14 January

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Wrinkles

Ageing skin droops and develops wrinkles, lines and furrows.

23 July

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Leg ulcers

A leg ulcer is a full thickness skin loss on the leg or foot due to any cause.

26 November

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Wound infection

A wound infection is defined by the US Centre for Disease Control and Prevention (CDC) as surgical site infection...

1 January

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Oral cancer

There are several types of oral cancers, but over 90% are squamous cell carcinomas.

10 February

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Palmoplantar pustulosis

Palmoplantar pustulosis is a chronic pustular condition affecting the palms and soles.

17 April

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Hidradenitis suppurativa

Hidradenitis suppurativa is an inflammatory skin disease that affects apocrine gland-bearing skin in the axillae, in the groin, and under...

27 February

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Psoriasis

Plaque psoriasis is the most common presentation of psoriasis.

4 February

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Raynaud phenomenon

Raynaud phenomenon is an episodic reduction in the blood supply to the fingers and/or toes occurring mainly in response to...

12 December

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Thromboangiitis obliterans

Thromboangiitis obliterans is a smoking-related condition that results in blood clot formation (thrombosis) in small and medium sized arteries, and...

31 May

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Discoid lupus erythematosus

Lupus erythematosus (LE) is a group of diverse persistent autoimmune inflammatory diseases and often affects the skin.

2 June

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Nicotine stomatitis

Nicotine stomatitis, also often called smoker's palate, is a reaction seen on the roof of the mouth caused by extreme...

31 May

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Elastosis

Elastosis refers to degenerative changes in the dermal tissue with increased deposition of elastin material.Elastosis is a prominent feature of...

17 April

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Diabetic foot ulcer

Diabetic foot ulcers are sores on the feet that occur in 15% of diabetic patients some time during their...

26 November

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Calciphylaxis

Calciphylaxis is a condition characterised by necrosis (cellular death) of the skin and fatty tissue.

22 March

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