Explore chapters and articles related to this topic
Evaluation of the Photosensitive Patient
Published in Henry W. Lim, Nicholas A. Soter, Clinical Photomedicine, 2018
Thomas Meola, Henry W. Lim, Nicholas A. Soter
Some of the photosensitivity diseases have a seasonal variation. This feature is characteristic of polymorphous light eruption, which typically appears in the spring or early summer with subsequent episodes becoming less severe as the summer progresses. This seasonal pattern is also a feature of solar urticaria.
Seeking Help for Mental Health Problems Early
Published in Leanne Rowe, Michael Kidd, Every Doctor, 2018
Seasonal affective disorder (SAD) is a mood disorder that has a seasonal pattern related to the variation in light exposure in different seasons, over a few years. It is usually found in countries with shorter days and longer periods of darkness, such as in the cold climate areas of the Northern Hemisphere. However, doctors who are not exposed to much sunlight, such as radiologists or those working night shifts, may also be at risk of SAD. Light therapy can be an effective treatment for this form of depression.
Introduction to Time Series Analysis
Published in Mohamed M. Shoukri, Analysis of Correlated Data with SAS and R, 2018
The seasonal pattern may be modeled by using dummy variables. Let L denote the number of periods or seasons (quarter, month, etc.) in the year. St can be modeled as follows:
A new approach for seasonal pattern: is it related to bipolarity dimension? Findings from an Italian multicenter study
Published in International Journal of Psychiatry in Clinical Practice, 2021
Andrea Aguglia, Alessandro Cuomo, Andrea Amerio, Simone Bolognesi, Gabriele Di Salvo, Laura Fusar-Poli, Arianna Goracci, Teresa Surace, Gianluca Serafini, Eugenio Aguglia, Mario Amore, Andrea Fagiolini, Giuseppe Maina
The causes and mechanisms behind mood disorders, including MDD and BD, are not fully understood and the etiopathogenesis is commonly framed as a complex outcome of genetic, cognitive, behavioural and environmental risk factors. The occurrence of seasonal patterns in mood disorders is well-established and recent literature evidence support a seasonal pattern for depressive symptoms also among the general population (Lukmanji et al. 2019; Overland et al. 2019). In this study we observed that 66.0% of patients admitted to inpatient psychiatry unit for a current MDE reported a seasonal pattern, of which 86 patients with a MDD and 112 with a primary diagnosis of BD. This prevalence is quite higher than literature evidence and it is probably due to inpatients setting and the severity of clinical condition. The comparison between BD and MDD with and without seasonal pattern showed several differences in terms of impulsiveness and some items of MOOD-SR (mood and cognition manic, rhythmicity) for patients with a primary diagnosis of BD. Conversely, patients with MDD with and without seasonal pattern were found to differ in terms of functioning, quality of life, unhealthy life style (physical activity and smoking status), as well as impulsiveness and items on MOOD-SR (depressive and manic mood, energy manic, cognition depressive and rhythmicity).
Epidemiology of major chronic inflammatory immune-related skin diseases in 2019
Published in Expert Review of Clinical Immunology, 2020
Few environmental factors have been documented as risk factors for pemphigus. Smoking has been associated with a moderate protective effect in some studies [95]. A well-established association has been made between the incidence of fogo selvagem and the infestation of endemic areas with black flies. A seasonal pattern has also been documented, with the highest incidence occurring at the end of winter and the lowest during summer [85]. This temporal and geographic clustering lends weight to the hypothesis that an exogenous antigen triggers the induction of molecular mimicry involving desmoglein 1. Tunisian pemphigus foliaceus, which is characterized by a notable predilection for young females, has been linked with the use of traditional Tunisian cosmetics (OR 4.0), Turkish baths (OR 3.2), cutting raw poultry (OR 5.1), contact with ruminants (OR 2.7), and insect stings (OR 3.1). In a study, increasing temperature, ultraviolet exposure and small particle air pollution were all associated with increased hospitalization for pemphigus [96]. Pemphigus has been associated with several comorbidities, especially other autoimmune diseases, including Sjögren’s syndrome, systemic lupus erythematosus, cardiovascular disease, and, more recently documented, psoriasis [97,98].
The current prevalence of asthma, allergic rhinitis, and eczema related symptoms in school-aged children in Costa Rica
Published in Journal of Asthma, 2019
M. E. Soto-Martínez, A. Yock-Corrales, K. Camacho-Badilla, S. Abdallah, N. Duggan, L. Avila-Benedictis, J. J. Romero, M. E. Soto-Quirós
TheTable 2overall prevalence of ever rhinitis and rhinitis in the last 12 months was high for all children (46.3% and 42.6%, respectively). Table 1 shows the significant difference in the prevalence of rhinitis ever, rhinitis in the last 12 months and rhinoconjuntivitis between groups, being more prevalent in the older age group. Rhinitis was highly associated with the development of eczema in both groups (OR = 2.5, 95% CI: 2.1–3.1, p < 0.0001), being more prevalent in the younger group. In those children with rhinitis, the mean of months with acute rhinitis symptoms was 5.1 months (95% CI: 4.9–5.4). Similar to its prevalence, rhinitis symptoms measured by number of months affected where more common in asthmatic children than in those with no asthma (5.9 vs. 4.6 months, p < 0.0001). Figure 1 shows the distribution according to each month, showing a seasonal pattern with a peak between October and February, time of transition between winter and summer months (time of the year with high winds).