Itch Sensitization? A Systematic Review Itch Sensitization? A Systematic Review

Do sensory aberrations including sensitization for itch occur in chronic itch? This meta-analysis examines the current research.Pain
Source: Medscape Allergy Headlines - Category: Allergy & Immunology Tags: Neurology & Neurosurgery Journal Article Source Type: news

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We examined the expression of TRPV1 in peripheral tissue and DRG neurons of CPIP model rats and we studied whether CPIP model could induce peripheral sensitization of TRPV1 channel and enhance DRG neuron excitability. Then we examined the therapeutic effects of locally applied TRPV1 specific antagonist AMG9810 on pain responses of CPIP model rats. Lastly, we explored the effects of AMG9810 on DRG neuron hyperexcitability and spinal glial activation induced by CPIP. Our results demonstrate that TRPV1 plays an important role in mediating the behavioral hypersensitivity of CPIP model rats via promoting peripheral nociceptor a...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
In this study we used HPLC and LC/MS analysis, combined with a BATMAN-TCM platform, for detailed HPLC fingerprint analysis and network pharmacology of QP, and investigated the anti-inflammatory and antipruritic activities of QP on ACD induced by squaric acid dibutylester (SADBE) in mice. The BATMAN-TCM analysis provided information of effector molecules of the main ingredients of QP, and possible chronic dermatitis-associated molecules and cell signaling pathways by QP. In ACD mice, QP treatment suppressed the scratching behavior induced by SADBE in a dose-dependent manner and inhibited the production of Th1/2 cytokines in...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Atopic dermatitis (AD) is a chronic, predominantly type 2 inflammatory skin disease that affects up to 10% of adults and 20% of children [1 –5]. Moderate-to-severe AD is characterized by extensive eczematous lesions, pronounced persistent, severe itch [6–8], substantial pain and discomfort [9–12], and is frequently associated with other type 2 (atopic/allergic) comorbidities, e.g. asthma, allergic rhinitis, chronic rhinosinusitis with nasal polyposis (CRSwNP), eosinophilic esophagitis, and food allergies [8,13–15], and a significant disease burden, e.g.
Source: Journal of Dermatological Science - Category: Dermatology Authors: Source Type: research
Patient Presentation A 9-year-old male came to clinic with a 1 month history of painful joint swelling. One month ago he started having right ankle pain that was intermittent but consistent. One day ago his right wrist, right ankle and bilateral knees had some swelling but no erythema or warmth. He says that he has pain in them when he moves but not when he is resting and he denies any joint stiffness or gelling. He also had 1-2 days of multiple red skin lesions on his extremities and trunk, not overlying the affected joints. The skin lesions do not come and go and do not itch. They are mainly discrete circular lesions wi...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
View Original Article Here: How Long Does Shingles Last In The Elderly? Shingles is a viral infection that follows a varicella-zoster infection, although it can take decades for symptoms of the secondary disease to emerge. The condition presents as a painful and blistering rash, but it is not life-threatening. According to the Center for Disease Control, there are nearly one million cases in the United States each year, and almost half of those cases are in older adults over age 60. Some people only see one instance of the illness, while others have recurring symptoms, but 30 percent of Americans will develop shingles at s...
Source: Shield My Senior - Category: Geriatrics Authors: Tags: Senior Safety Source Type: blogs
Purpose of review: This review aims to describe the recent findings on epidemiology, pathophysiology, and management of neuropathic symptoms of the ocular surface, with a focus on potential similarities between sensations of dry eye, pain and itch. Recent findings: A narrative review of the literature was undertaken. Key references from research in dry eye, neuropathic symptoms of the ocular surface, ocular pain and itch, as well as general references on itch and pain neurobiology were included. Recent findings suggest aspects of dry eye, chronic ocular pain and itch symptomatology are driven by neuropathic pain mechanism...
Source: Current Opinion in Allergy and Clinical Immunology - Category: Allergy & Immunology Tags: EYE ALLERGY: Edited by Leonard Bielory and Abraham Solomon Source Type: research
This article reviews the acute neural transmission of pain, pruritus, and nausea symptoms, which can begin in the periphery and/or viscera. The subsequent multiple pathways in the central nervous system that become involved in the processing of these symptoms are also discussed. The authors describe human brain imaging studies that have revealed consistent cortical and subcortical networks  activated by these symptoms, including sensory, limbic, and associative regions. In particular, the authors discuss information revealed by the studies regarding the primary somatosensory cortex, secondary somatosensory cortex, ant...
Source: Innovations in Clinical Neuroscience - Category: Neuroscience Authors: Tags: Current Issue Neurologic Systems and Symptoms Neurology Pain Review central processing nausea pruritus Source Type: research
Discussion Fatigue is a subjective feeling of decreased energy, tiredness or feeling of exhaustion. Lethargy is often used synonymously, but lethargy is a state of being drowsiness or sleepy, and implies mental status changes. Both can cause the person to be apathetic or less active. Fatigue is a common state that almost everyone experiences multiple times in his or her lifetime. For most people it is a relatively acute or short-term chronic problem, often with a relatively easily identifiable problem cause, such as inadequate sleep, acute illness, or overexertion. For some, it can be less readily identifiable such as dep...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
AbstractFor centuries, itch was categorized as a submodality of pain. Recent research over the last decade has led to the realization that itch is in fact a separate and distinct, albeit closely related, sensation. Chronic itch is a common complaint and has numerous etiologies. Various receptors (TRPA1, TRPV1, PAR2, gastrin-releasing peptide receptor (GRPR), Mas-related G proteins), secreted molecules (histamine, nerve growth factor (NGF), substance P (SP), proteases), and cytokines/chemokines (thymic stromal lymphopoietin (TSLP), IL-2, IL-4, IL-13, and IL-31) are implicated as mediators of chronic pruritus. While much rem...
Source: Clinical Reviews in Allergy and Immunology - Category: Allergy & Immunology Source Type: research
Conclusion Although HSP patients mostly range from 4–7 years old it can still presents in adolescent age group. Non-thrombocytopenic palpable purpura with multi-organ involvement (gastrointestinal, skin and joints) should make one consider the diagnosis. skin biopsy should be taken less than 24 hrs from the presentation because in more chronic lesions, vessel damage leads to nonspecific leakage of all isotypes of immunoglobulin. Abstract ID: 67 Figure 1
Source: Journal of Investigative Medicine - Category: Research Authors: Tags: Rheumatology/Immunology/Allergy Source Type: research
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