INTRODUCTION

Psoriasis is a chronic, immune-mediated polygenic skin disorder characterized by epidermal hyperplasia. Cardinal histopathological features are as follows: hyperkeratosis, parakeratosis, neutrophils in the stratum corneum and spinous layer, hypogranulosis with suprapapillary thinning, acanthosis, clubbed rete ridges, dilated capillaries, and perivascular lymphocytes. As histopathology may be more definitive compared to clinical manifestations, being able to diagnose psoriasis accurately through histopathology may enable early diagnosis and treatment. This could ideally mean a decrease in its progression, prevention of complications, and improvement of quality of life for psoriatic persons.

To examine, grade, and compare histopathologic f indings of psoriatic lesions with established parameters from previous literature.

This is a retrospective descriptive study that will examine, grade, and compare all histopathologic findings of psoriatic lesions of patients who have accessed care at Ospital ng Manila Medical Center from 2010-2015 with established parameters from previous literature.

All 41 cases (100%) showed parakeratosis, followed in decreasing order by 19 cases (46.34%) with Munro's microabscesses, 15 cases (36.59%) with pustules of Koga, 15 cases (36.59%) with hypogranulosis, and 11 cases (26.83%) with spongiosis. Using the visual analogue scale of Moorchung Net al (2013), 28 cases (68.29%) showed mild inflammatory infiltrates, followed in decreasing order by 19 cases (46.34%) with mild epidermal hyperplasia, 12 cases (29.27%) with mild capillary proliferation, and 4 cases (9.77%) with mild suprapapillary thinning.

Findings of the current study showed histopathologic features of both early and fully developed lesions based on established psoriasis histopathological parameters. Recognized histopathological features were not consistently found in well-developed lesions.

BACKGROUND

Psoriasis is an increasingly prevalent chronic disease commonly treated with topical corticosteroids (TCS), although these agents are often misused. There is a need to explore the factors influencing nonadherence to TCS among patients with psoriasis in the Philippines. This study aimed to determine the knowledge, attitude, and practice (KAP) regarding TCS among Filipino patients with psoriasis.

A cross-sectional survey was conducted on 76 Filipino patients with psoriasis at a tertiary hospital using a constructed validated questionnaire.

Patient scores clustered at the upper end of the distribution, indicating a generally good level of KAP regarding TCS. Increasing age was associated with a lower level of knowledge, while female respondents had a higher level of knowledge. Higher knowledge levels were associated with better patient attitude, and better patient attitude was associated with better practice.

Predictors of correct KAP regarding TCS are less likely influenced by sociodemographic and clinical factors; rather, these three domains significantly correlate with each other. Physicians can utilize these interrelationships by educating patients regarding their topical treatment to yield more positive attitudes regarding its efficacy and minimize their fear of side effects, which can motivate them to adhere to prescribed therapy.

OBJECTIVE: To determine the role of Tripterygium wilfordii multiglycoside (TGW) in the treatment of psoriatic dermatitis from a cellular immunological perspective. METHODS: Mouse models of psoriatic dermatitis were established by imiquimod (IMQ). Twelve male BALB/c mice were assigned to IMQ or IMQ₊TGW groups according to a random number table. Histopathological changes in vivo were assessed by hematoxylin and eosin staining. Ratios of immune cells and cytokines in mice, as well as PAM212 cell proliferation in vitro were assessed by flow cytometry. Pro-inflammatory cytokine expression was determined using reverse transcription quantitative polymerase chain reaction. RESULTS: TGW significantly ameliorated the severity of IMQ-induced psoriasis-like mouse skin lesions and restrained the activation of CD45⁺ cells, neutrophils and T lymphocytes (all P<0.01). Moreover, TGW significantly attenuated keratinocytes (KCs) proliferation and downregulated the mRNA levels of inflammatory cytokines including interleukin (IL)-17A, IL-23, tumor necrosis factor α, and chemokine (C-X-C motif) ligand 1 (P<0.01 or P<0.05). Furthermore, it reduced the number of γ δ T17 cells in skin lesion of mice and draining lymph nodes (P<0.01). CONCLUSIONS TGW improved psoriasis-like inflammation by inhibiting KCs proliferation, as well as the associated immune cells and cytokine expression. It inhibited IL-17 secretion from γ δ T cells, which improved the immune-inflammatory microenvironment of psoriasis.
Male ; Animals ; Mice ; Tripterygium ; Psoriasis/drug therapy* ; Keratinocytes ; Skin Diseases/metabolism* ; Cytokines/metabolism* ; Imiquimod/metabolism* ; Dermatitis/pathology* ; Disease Models, Animal ; Mice, Inbred BALB C ; Skin/metabolism*

Erythrodermic psoriasis is the least common and most severe variant of psoriasis manifesting as erythema and scaling affecting more than 75% body surface area. Infections, such as COVID-19, are proposed triggers due to provoking immune responses that can progress into a hyperinflammatory state. We present a case of a patient with a history of psoriasis evolving into an erythrodermic form after infection with COVID-19 virus.

A 50-year-old female, clinically diagnosed with plaque type psoriasis for 12 years, sought emergency consult then was admitted due to persistence of generalized erythematous scaly plaques, with accompanying skin and joint pains as well as high grade fever. Definitive diagnosis was done with clinicopathologic correlation including dermoscopy and skin punch biopsy. The patient’s Psoriasis Area and Severity Index (PASI) was 70.2, indicating severe score. SARS-COV-2 RT-PCR was done, revealing a positive result for the causative agent of COVID-19. A multidisciplinary approach to treatment was done with dermatology, rheumatology, and infectious disease services. Medications include antibiotics, antimetabolites, pain medications, and topical steroids. The patient was discharged then would follow-up with the dermatologist with phototherapy and with the rheumatologist. After completing treatment, most lesions have recovered.

Erythrodermic psoriasis is a severe and uncommon form of psoriasis that may be exacerbated by various infections such as COVID-19. Proper history, physical examination, and use of diagnostic procedures can aid in pinpointing the cause of the disease which will be indispensable in managing such patients.

Acrodermatitis continua of Hallopeau (ACH) is a chronic, rare pustular form of psoriasis that affects the distal extremities, particularly the fingers and toes. Although pustules are characteristic, they may not always be clinically apparent, especially in the earlier stages. This condition is often resistant to treatment; therefore, early and accurate diagnosis is essential for proper management and preventing complications.

A 34-year-old male farmer presented with a one-year history of pruritic erythematous scaly plaques involving both palms, thumbs and thumbnails. Pertinent history showed that the lesions appeared after contact with rubber gloves and fertilizers. Irritant versus allergic contact dermatitis were considered, but a negative patch test result ruled out the allergic component. He was treated with topical corticosteroids and was advised to wear cotton gloves under rubber gloves while working which provided relief. However, the plaques recurred now with appearance of pustules on both hands. A skin punch biopsy was done revealing psoriasiform dermatitis with subcorneal pustules, consistent with ACH. The patient was started on methotrexate 7.5 mg/week and topical clobetasol, alternating with calcipotriol with improvement of the palmar plaques and pustules.

ACH is often misdiagnosed due to its pus-filled lesions which may mimic infection or secondarily infected contact dermatitis or dyshidrotic eczema. In this case, the initial presentation mimicked a contact dermatitis, and it was only after patch testing and skin biopsy, that a definitive diagnosis was made.

Human immunodeficiency virus (HIV) leads to immunosuppression by depleting CD4+ T-cells. Psoriasis, a common immune-mediated inflammatory dermatosis, can paradoxically worsen or emerge as an initial presentation of HIV. The introduction of highly active antiretroviral therapy (HAART) in psoriatic patients with HIV may trigger severe psoriasis flare-ups, often linked to immune reconstitution inflammatory syndrome (IRIS).

This case involves a 31-year-old Filipino male with recurrent, resistant psoriatic plaques. Further testing revealed latent syphilis and HIV infection. The patient completed treatment for syphilis and began HAART, but developed erythrodermic psoriasis, likely due to IRIS. After an inadequate response to acitretin, guselkumab, an IL-23 inhibitor, was administered. The patient responded well, showing significant improvement after four months of treatment without adverse effects.

This case suggests that in severely immunocompromised patients with newly diagnosed HIV, adding guselkumab to conventional HAART may be a safe and effective option for controlling erythrodermic psoriasis flares triggered by immune reconstitution. However, further research is needed to assess the long-term safety and efficacy of guselkumab in HIV-associated psoriasis.

BACKGROUND

Psoriasis is a chronic, incurable inflammatory disease that often frustrates patients and negatively impacts quality of life, affecting treatment satisfaction.

This study evaluated treatment satisfaction, medication adherence, and dermatological quality of life in Filipino patients with plaque-type psoriasis.

Ninety-five patients at a tertiary dermatology clinic completed surveys using the Treatment Satisfaction Questionnaire for Medications (TSQM 1.4), Morisky Medication Adherence Scale-4 (MMAS), and Psoriasis Disability Index (PDI). Disease severity was measured using the Psoriasis Area Severity Index (PASI).

Patients reported moderate to high treatment satisfaction, medium medication adherence, and minimal quality of life impairment across all treatments. Convenience satisfaction was significantly correlated with educational attainment. Satisfaction with effectiveness and convenience was strongly linked to medication adherence, while overall satisfaction was tied to disease severity. Additionally, satisfaction with side effects was significantly related to quality of life.

All three treatment modalities remain vital for managing psoriasis in low- resource settings. Emphasizing medication side effects, treatment convenience, and their impact on quality of life can foster a more patient-centered approach.

BACKGROUND

Psoriasis is an increasingly prevalent chronic disease commonly treated with topical corticosteroids (TCS), though these agents are often misused. There is a need to explore the factors influencing non-adherence to TCS among psoriasis patients in the Philippines.

This study aimed to determine the knowledge, attitude, and practice (KAP) regarding TCS among Filipino patients with psoriasis.

A cross-sectional survey was conducted on 76 Filipino patients with psoriasis in a tertiary hospital using a constructed validated questionnaire.

Patient scores clustered at the upper end of the distribution, indicating a generally good level of KAP regarding TCS. Increasing age was associated with a lower level of knowledge while female respondents had a higher level of knowledge. Higher knowledge levels were associated with better patient attitude, and better patient attitude was associated with better practice.

Predictors of correct KAP regarding TCS are less likely influenced by sociodemographic and clinical factors; rather, these three domains significantly correlate with each other. Physicians can utilize these interrelationships by educating patients regarding their topical treatment to yield more positive attitudes regarding its efficacy and minimize their fear of side effects, which can motivate them to adhere to prescribed therapy.

BACKGROUND

Therapeutic inertia (TI) is the inability of physicians to initiate a more aggressive treatment in patients who need them. It is more common among patients with chronic disease and may be secondary to physician-related factors, patient-related factors, or healthcare system-related factors.

This study aims to explore the evidence behind TI in the management of moderate to severe psoriasis and to determine the factors that contribute to it.

An extensive literature search was conducted systematically in Cochrane Library, Medline, Epistemonikos, Google Scholar, and HERDIN from their inception up to June 2023. Cross-sectional studies that looked into TI in moderate to severe psoriasis and discussed the factors that lead to it were included. The review was limited to peer-reviewed journals written in English. Outcomes were presented as counts and percentages, and notable findings from each study were highlighted.

3256 records were identified but only 4 studies met the inclusion criteria and were included in the analysis. Based on the available evidence, the prevalence of TI in psoriasis varies from 25.4-35.6%. The occurrence of TI in psoriasis is largely caused by physician-related factors (reluctance to escalate treatment due to lack of knowledge and experience) and patient-related factors (satisfaction with current treatment or refusal to change treatment due to psychological barriers). Healthcare system-related factors were not directly explored.

The limited data on TI in the management of moderate to severe psoriasis presents opportunities to further explore its prevalence, the factors contributing to it, and its effect on treatment outcomes.

BACKGROUND

Narrow-band ultraviolet B (NB-UVB) phototherapy is a mainstay in the treatment of psoriasis, with dosage related to the minimal erythema dose (MED), with initial dose at 50-70%, followed by dose increments.

To determine the MED of Filipino adult patients with psoriasis using NB-UVB phototherapy at a tertiary government hospital.

This is an analytical, observational, cross-sectional study with prospective data collection among Filipino adults with psoriasis, at Dr. Jose N. Rodriguez Memorial Hospital and Sanitarium, from March 2023 to June 2024. Participants underwent MED determination using NB-UVB phototherapy cabinet. MED was defined as the square with definite redness, very light pink, or faintly detectable erythema over the entire exposed site after 24 hours. Clinicodemographic information were gathered and analyzed for possible associations with obtained MED.

Forty-eight participants were enrolled with MED as follows: 600 mJ/cm² (47.92%), 800 mJ/cm² (25%), 1000 mJ/cm² (12.50%), 1200 mJ/cm² (10.42%), and 400 mJ/cm² (4.17%). Age appeared to be directly proportional to MED dose (p-value =0.047). A statistically significant association of having lower MED values (p=0.017) were observed in patients with concomitant diabetes mellitus. Sex, Fitzpatrick skin type, psoriasis severity, and the body site used for testing, had no association with obtained MED values.

The median MED was 600 mJ/cm². Based on this, the suggested initial dosage of NB-UVB at 50-70% is 300-420 mJ/cm². These findings demonstrate that the current starting dose being used at DJNRMHS can either be maintained at 300 mJ/cm² or can be safely increased up to 420 mJ/cm².