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Background: Atopic dermatitis (AD) is a chronic inflammatory skin disorder. Bristol Stool Form Scale (BSFS) is a widely used stool scoring method that could indirectly reflect intestinal function. Objectives: To evaluate the associations of AD with BSFS. Methods: This was a population-based cross-sectional study of freshmen in five universities of China. AD diagnosis was performed by dermatologists according to the guideline from the American Academy of Dermatology. BSFS and covariates were collected through an online questionnaire survey. Chronic itch scores were assessed by the numeric rating scales and grouped into quartiles (Q). Mixed logistic regression models were used. Subgroup analysis was conducted by covariates. P value < 0.05 was considered statistically significant. Results: The prevalence of hard stools and loose stools were 8.9% and 7.6%, respectively (20,049 participants). After adjusting covariates, AD was significantly associated with hard stools (OR = 1.38, P < 0.001) and loose stools (OR = 1.24, P = 0.037). In subgroup analysis of hard stool, a stronger effect was observed in intake of milk (> 3 days/week), yogurt (> 3 days/week), pork (< 1 day/week), and higher itch scores (Q4). Conclusion: This study found the relationship between AD and abnormal stool forms, and the association with hard stools might be modified by dietary factor. [ABSTRACT FROM AUTHOR]

The article presents a study which investigate the self-injurious skin picking behaviours of atopic dermatitis (AD and psoriasis patients using Skin Picking Scale (SPS). It mentions that the study also examined the overall association of degree of skin picking with itch and skin lesion intensity. It informs that skin picking is generated as a response to pruritus or other skin sensations, such as burning, tingling or pain.

Asian Atopic dermatitis (AD) presents as a mixed phenotype between the European American (EA) AD and psoriasis phenotypes, with highly atypical features for AD, including clearer demarcation of lesions, with more prominent scaling, lichenification, parakeratosis, hyperplasia and a unique cytokine profile with coactivation of the TH2 and TH17 axes. The cutaneous immune dysregulation in Chinese patients with AD usually exhibit remarkable increase in epidermal hyperplasia and parakeratosis, frequently observed in areas such as the hands, feet, knees and elbows. Currently, the response of chronic hyperplastic lesions to various conventional treatment modalities, including topical corticosteroids and topical calcineurin inhibitors, is not optimistic and often accompanied by various complications. As a Phosphodiesterase 4 (PDE4) inhibitor, crisaborole broadly inhibits inflammatory signaling pathways, and has demonstrated definite efficacy in AD partly due to its smaller molecular weight and higher transdermal absorption efficiency. This study aims to find the clinical efficacy of 2% crisaborole ointment monotherapy for chronic hyperplastic lesions of AD in real-world research in China. We retrospectively enrolled 49 patients with AD aged 12 years or older with chronic hyperplastic lesions and an Investigator's Static Global Assessment (ISGA) score of mild or moderate. The patients were administered with 2% crisaborole ointment for twice-daily application until the complete clearance of lesion. The efficacy endpoints comprised the onset time of pruritus and lesion remission, and the time of complete lesion clearance. A 1-grade or more improvement of the VAS scores from baseline was defined as the pruritus remission. An improvement of 1 point or more of the ISGA scores was indicative of improved skin lesions. The ISGA score of 0 (clear) or 1 (almost clear) with a ≥2-grade improvement from baseline indicated complete remission of skin lesions. After subgrouping the patients by age and AD duration, we further compared differences in efficacy endpoints to explore potential influencing factors on the effectiveness of crisaborole. Two percent crisaborole ointment showed good efficacy for treating chronic hyperplasia lesions in Asian patients with AD, with minor irritation, early remission of pruritus [7.0 (3.0, 10.0) days] and lesions [7.0 (5.0, 10.0) days]. The median time for complete lesion clearance was 30 days. Two percent crisaborole ointment showed different efficacy in the different age. The onset of pruritus remission appeared to be more rapid in the elderly [2.0 (1.0, 10.0)] compared with the adolescents [4.0 (2.3, 6.5)] and the adults [7.0 (3.5, 10.0)], but with no statistically significant difference (P = 0.072). The adolescents had an earlier onset of lesion remission by approximately 3 days compared with the adults and the elderly (P = 0.044). Although the onset of pruritus remission for the adolescents and the adults was similar to their onset of lesion remission, the elderly seemed to experience significantly earlier pruritus remission compared with their lesion remission onset. There was no statistical difference in complete lesion clearance time among different age groups (P = 0.019). Commonly seen in Asian patients with AD, chronic hyperplasia lesions generally do not respond well to other topical medications. Two percent crisaborole ointment monotherapy is an effective treatment for chronic hyperplasia lesions in patients with AD of all age groups, and onset of pruritus and lesion remission is different in the different age group. [ABSTRACT FROM AUTHOR]