Itch

Acquired ichthyosis (AI) is a relatively rare cutaneous entity characterized by transient, generalized scaling and pruritus in the absence of family history of ichthyosis or atopic disease. The hyperkeratosis in AI can range from the mild, white-to-brown scaling resembling that in ichthyosis vulgaris (IV) to the more prominent dark brown scaling phenotype, similar to that found in lamellar ichthyosis. The disease can wax and wane in relation to endogenous and/or exogenous factors. Histopathology of AI is similar to that found in IV. AI is usually of cosmetic concern to patients but can in some cases reflect the presence of more serious conditions, including malignancies, autoimmune diseases, or metabolic disorders. In some cases, AI can be an adverse effect of a medication or the cutaneous symptom of a toxic exposure. Other conditions, such as severe xerosis or eczema, can present with clinical findings similar to AI, making diagnosis a challenge. Furthermore, cases of AI are sporadic throughout the literature and have been documented across a wide variety of medical settings distinct from dermatology, which often contribute to misdiagnosis of this disease. Definitive management requires prompt identification and treatment of the inciting factors combined with conservative therapies, including topical emollients, keratolytics, retinoids, or corticosteroids, and in rare cases, with oral retinoids.

Survey data from the United Stated, the United Kingdom, and the Netherlands indicate peristomal itch is prevalant among ostomy patients. Pruritus has a significant negative impact on health-related quality of life, resulting in discomfort and interrupted sleep. In ostomy patients, peristomal skin scratching also may interfere with adherence of the ostomy pouching system. This article reviews the classification and pathophysiology of itch in the peristomal skin, along with options for its management.

Atopic dermatitis (AD) is a common inflammatory skin disease often associated with a significant impairment in the quality of life of affected patients. The Italian Society of Dermatology and Venereology (SIDeMaST) planned a national information campaign, providing direct access to 27 dermatologic centers dedicated to the management of AD. The aim of this study aimed was to outline critical aspects related to AD in the general population. Overall, 643 adult subjects were included in this study, and in 44.2% (284/643) of cases, a diagnosis of AD was confirmed, whereas about 55% of subjects were affected by other pruritic cutaneous diseases. Higher intensity of pruritus and sleep disturbance, as well as an increased interference in sport, work, and social confidence was reported in the AD group compared to the non-AD group. In the AD subgroup, the mean duration of disease was of 15.3 years, with a mean eczema area and severity index (EASI) score of 11.2, and investigator global assessment (IGA) score of 1.9 and an itch numeric rating scale (NRS) of 6.9. Almost 32% of patients were untreated, either with topical or systemic agents, whereas 44.3% used routine topical compounds (topical corticosteroids and calcineurin inhibitors), and only 7.0% of patients were systemically treated. Only 2.8% of patients reported complete satisfaction with the treatment received for AD to date. This study reveals a profound unmet need in AD, showing a poorly managed and undertreated patient population despite a high reported burden of disease. This suggests the usefulness of information campaigns with the goal of improving patient awareness regarding AD and facilitating early diagnosis and access to dedicated healthcare institutions.

Ectoine is a widespread osmolyte enabling halophilic bacteria to withstand high osmotic stress that has many potential applications ranging from cosmetics to its use as a therapeutic agent.