This was not demonstrated in countries that originally had a high prevalence of AD, such as the UK (16.0% aged 6–7 years) and Australia (17.1% aged 6–7 years), where prevalence had plateaued.[ 4 ] Despite having overall rates of AD in geographical regions with predominance of individuals with skin of colour, most studies on AD have been conducted within Europe and the US.[ 5 ] The prevalence and incidence of AD were initially lower than what is now understood and show an increasing trend.[ 6 ] A higher prevalence, a greater severity, level of pruritus, impact of pruritus and prevalence of xerosis were noted in AD patients with darker skin as compared with those with lighter skin in studies predominantly based in the US and UK.[ 7 ] A systematic review of studies published between 2011 and 2021 reported that the prevalence of AD in paediatric populations in India ranged from 3.1% to 7.21%, while in the general population it varied between 0.98% and 9.2%.
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