4th July 2023

Clinical Features

Contact dermatitis due to poison ivy.

Image Source: Wikimedia Commons (2013). Poison ivy contact dermatitis, Licensed under a creative commons licence. Available for free at: https://commons.wikimedia.org/wiki/File:Poison_ivy_contact_dermatitis.jpg (Accessed on: 1 May 2022).

Urticaria

Image Source: Wikimedia Commons (2014). Have Urticaria 3, Licensed under a creative commons licence. Available for free at: https://commons.wikimedia.org/wiki/File:Have_Urticaria_3.jpg (Accessed on: 1 May 2022).

Clinical presentations of cutaneous allergic skin diseases vary, so a differential diagnosis will be determined by a thorough history and examination. Asking specifically about the symptoms, duration, and pattern of the eruption will assist with this.