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This report details a case study where a 40-year-old woman experienced allergic contact dermatitis and angioedema-like symptoms after using PPD-containing hair dye. Patch testing confirmed a positive reaction to PPD, highlighting the substance's potential to cause both T-cell and IgE-mediated hypersensitivity reactions.

A 5-year-old girl with a rare skin disorder was effectively treated with skin creams instead of oral medication.

This case report details a 21-year-old woman with dermatopathia pigmentosa reticularis, presenting with generalized reticulate hyperpigmentation, diffuse noncicatricial alopecia, onychodystrophy, palmoplantar keratoderma, and poorly developed dermatoglyphics.

This study suggests that PRX01, PRX44, and PRX73 regulate extensin-mediated cell wall properties during root hair cell growth, influencing growth patterns, peroxidase activity, and cell wall thickness.

This study analyzed patients with X-linked dominant chondrodysplasia punctata and identified novel mutations in the emopamil-binding protein gene, highlighting the need for genetic testing alongside biochemical analysis for accurate diagnosis.

This review suggests that PDRN shows promise as a safe and versatile regenerative agent for wound healing and other dermatological applications, based on its dual mechanisms and clinical evidence of efficacy.

This study found that a specific mutation in the mouse RXRalpha gene significantly impacts immune responses and causes hair loss and skin cysts.

This article reviews the clinical features of dermatopathia pigmentosa reticularis, highlighting its characteristic triad of symptoms, but provides no new research results.

This study found that paxillin knockdown in human granulosa-derived cells and mouse models decreased androgen receptor protein levels and altered gene expression, suggesting paxillin's role in protecting against androgen excess effects, as observed in a polycystic ovary syndrome mouse model.

This study found that cPPARγ and dnPPARγ isoforms are differentially expressed in healthy human skin, suggesting that PPARγ modulators may have compartment-specific effects depending on isoform presence.

This study identified the genes for pyochelin siderophore biosynthesis as a novel target regulated by the heme-responsive PrrH sRNA in Pseudomonas aeruginosa.

This review discusses the potential roles of prostaglandin D2 and its receptor CRTH2 in various diseases beyond allergies and asthma and reports no new clinical results.

This study found that Polycomb repressive complex 1 is crucial for skin development and stem cell specification, influencing gene activity beyond its known repressor functions.

This study resulted in a draft version of the Patient‐Reported Impact of Dermatological Diseases measure, PRIDD, which includes 27 items refined from patient consensus and is now undergoing psychometric testing.

This report describes two Saudi brothers with dermatopathia pigmentosa reticularis who exhibited normal hair shafts despite their condition.

This study found no significant difference in SARS-CoV2 IgG seroconversion rates between patients with immune-mediated inflammatory diseases treated with targeted immune-modulating therapies and those on conventional systemic treatments.

This review discusses the potential of polydeoxyribonucleotide (PDRN) for various dermatological treatments and highlights its significant effects on wound healing, anti-aging, acne scars, and hair loss, but emphasizes the need for further clinical studies.

This article presents a case of a seventeen-year-old female with dermatopathia pigmentosa reticularis and emphasizes the importance of distinguishing its clinical features from other similar disorders, supported by dermoscopic and histopathological findings.

This study indicates that individuals exposed to PPD mount varying immune responses, with either tolerance, subclinical inflammation, or allergy, suggesting no true non-responders to PPD.

This study found that the retinoid LGD1069 suppressed mammary tumorigenesis in a mouse model without observable toxicity, while TTNPB showed modest effects but was associated with significant toxicity.

This article reviews the clinical features and associated medical diagnoses of pityriasis rubra pilaris, noting incomplete information on disease prevalence and related conditions but offering no new clinical findings.

This article reviews the potential uses of PDRN in regenerative and aesthetic medicine, noting promising results in various treatments but highlighting the need for further long-term studies to confirm their safety and effectiveness.

This review analyzes PDRN's molecular mechanisms and therapeutic applications in anti-aging dermatology but reports no new clinical results, highlighting the need for more standardized protocols and long-term evaluations.

This review discusses the diverse roles of PPARβ/δ in skin health and disease, including its involvement in skin wound healing and inflammatory skin conditions, without presenting new experimental results.

In this study, the authors reported that AtRXR3, a phosphorus-inducible DUF506 protein, modulates root hair growth under phosphorus stress by interacting with calmodulin and influencing calcium oscillations.

In this study, researchers identified three root hair-specific peroxidases that may control cell wall properties during root hair cell expansion, affecting growth, enzyme activity, and cell wall structure.

This review discusses the mechanisms associated with protoporphyrin IX in living cells and reports no clinical results; the authors emphasize its potential in cancer diagnosis and the risks of toxicity.

In this study, the ethanol extract of Puerariae Radix was found to promote proliferation and ERK activation in human dermal fibroblasts, suggesting its potential as a new cosmetic ingredient.

This study found that PRC2 plays a crucial role in maintaining intestinal homeostasis by supporting progenitor cell proliferation and limiting secretory lineage differentiation.

This review discusses the role of peroxisome proliferator-activated receptors and their agonists in dermatology but reports no new clinical results.