DermNet

The authoritative resource about dermatology and the skin: dermnetnz.org The world's most popular skin website - written and edited by Dermatologists worldwide.

27/05/2026

Nemolizumab is a targeted biologic therapy used in dermatology to treat conditions driven by severe itch, particularly moderate-to-severe atopic dermatitis and prurigo nodularis (pictured). It works by blocking the IL-31 receptor, a key pathway involved in chronic itch and skin inflammation, helping reduce pruritus and improve skin symptoms.

Read more here: https://dermnetnz.org/topics/nemolizumab

25/05/2026

What can cause a well-demarcated, symmetrical rash over the dorsum of both feet 👣 ? Think beyond infection…

Read more about the case here: https://dermnetnz.org/cases/a-strapping-foot-rash

20/05/2026

Bed bugs are small blood-feeding insects that typically bite exposed skin during sleep, often causing itchy red bumps that may appear in clusters or a line- sometimes called the “breakfast, lunch, and dinner” pattern. Interestingly, up to 70% of people may have little or no reaction to the bites, making infestations difficult to recognise.

Read more here: https://dermnetnz.org/topics/bed-bugs

17/05/2026

Erythema multiforme is an immune-mediated skin condition characterised by distinctive “target” or bullseye-shaped lesions that often appear on the hands, feet, and limbs. It is usually triggered by infections (most commonly herpes simplex virus) and is typically self-limiting, although some cases may involve mucous membranes.

Read more here: https://dermnetnz.org/topics/erythema-multiforme

13/05/2026

Did you know that this condition may sometimes be associated with cystic fibrosis or carriers of the CF gene? Read the full case here: https://dermnetnz.org/cases/swollen-painful-palms-following-water-exposure

10/05/2026

Local anaesthesia is the temporary loss of sensation in a specific area of the body, allowing dermatological and surgical procedures to be performed with minimal pain. It works by blocking nerve signals in the skin, and may be applied topically or injected, with lidocaine (lignocaine) being one of the most commonly used agents.

Read more here: https://dermnetnz.org/topics/local-anaesthesia

06/05/2026

Skin prick testing is a simple and widely used allergy test that helps identify substances triggering allergic reactions such as hay fever, food allergy, asthma, or venom allergy. During the test, small amounts of allergens are placed on the skin and lightly pricked to see if a raised, itchy wheal develops, usually within 15–20 minutes.

Read more here: https://dermnetnz.org/topics/skin-prick-testing

03/05/2026

What are your differentials for this facial rash? Read the full clinical case here: https://dermnetnz.org/cases/unusual-facial-rash-of-3-months

29/04/2026

Plant dermatitis (phytodermatitis) is skin inflammation caused by direct contact with a plant or plant substances such as sap, pollen, leaves, or fruit. Reactions may be irritant, allergic, or triggered by sunlight after plant exposure (phytophotodermatitis), often causing redness, itching, blisters, or streaky rashes at the site of contact. Pictured is 1) poison ivy and 2) dandelion that can cause plant dermatitis.

Read more here: https://dermnetnz.org/topics/plant-dermatitis

26/04/2026

Solar urticaria is a rare form of chronic inducible urticaria in which the skin develops itchy wheals or swelling within minutes of exposure to sunlight or artificial UV light. The reaction usually affects sun-exposed skin and may settle within an hour once exposure stops.

Read more here: https://dermnetnz.org/topics/solar-urticaria

Address

Hamilton

Website

https://dermnetnz.org/

Alerts

Be the first to know and let us send you an email when DermNet posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Practice

Send a message to DermNet:

Shortcuts

Want your practice to be the top-listed Clinic in Hamilton?