Dr Nasser explains that the broken skin can allow allergens such as peanuts to enter the unprotected body, prompting the immune system to react as if the peanut was an enemy invader.

BBC: NEWS | Health | Rise in multiple allergy patients

Once the skin barrier is broken, the skin can become infected by bacteria, especially Staphylococcus aureus, which commonly live on the skin.

CNN: Atopic dermatitis (eczema)

They are followed in the late morning and early afternoon by fortune tellers, diviners of various techniques, with their charts and charms, by people who claim to be able to cure broken hearts and others who occupy themselves with broken bodies, their stalls an assembly of snake skin, chameleon and desert fox, dried herbs and wild trees.

BBC: Djemaa el Fna, the beating heart of Marrakesh