FAS and obesity due to melanocortin 4 receptor deficiency: Female sex, living in a large, small or medium-sized city, high FAS (OR, 1.07; 95 % CI, 1.01–1.12), maternal bachelor’s degree (OR, 1.16; 95 % CI, 1.04–1.29), high subjective academic achievement (middle-low OR, 1.09; 95 % CI, 1.01–1.17; high-middle OR, 1.15; 95 % CI, 1.07–1.24; high OR, 1.18; 95 % CI, 1.09–1.29) and obesity were significant risk factors for atopic dermatitis.