ObjectiveTo refine the Chinese version of the Dimensional Anhedonia Rating Scale (DARS) and evaluate the psychometric properties of the Revised Chinese DARS (RC-DARS) in a large sample of first-visit psychiatric outpatients.MethodsThe study was conducted in two sequential phases at a specialized psychiatric hospital. In Phase I (n = 277), the existing Chinese DARS underwent semantic and cultural refinement in accordance with ISPOR and TRAPD guidelines, incorporating cognitive interviews and back-translation procedures. In Phase II (n = 788), the RC-DARS was administered alongside the Self-Rating Depression Scale (SDS), Self-Rating Anxiety Scale (SAS), Pittsburgh Sleep Quality Index (PSQI), and the MMPI Suicide Ideation Subscale (MMPI-SI). Exploratory and confirmatory factor analyses were conducted using common-factor extraction and the WLSMV estimator for ordinal indicators. Internal consistency, gender-based measurement invariance, and convergent validity were evaluated.ResultsExploratory analyses supported a four-factor domain structure. Confirmatory factor analysis demonstrated good model fit for the domain-based model (χ²/df = 3.81, CFI = 0.98, TLI = 0.97, RMSEA = 0.08, SRMR = 0.05), with substantially superior fit relative to an alternative reward-processing model. Internal consistency was excellent (Cronbach’s α = 0.95; McDonald’s ω = 0.96). Multi-group analyses supported configural, metric, and scalar invariance across gender (ΔCFI < 0.01). RC-DARS total scores were significantly negatively correlated with depressive symptoms (r = −0.443), anxiety (r = −0.317), sleep disturbance (r = −0.494), and suicide risk (r = −0.312) (all p <.001). Individuals with severe depressive symptoms exhibited significantly lower RC-DARS scores than those below the clinical threshold.ConclusionsThe RC-DARS demonstrates robust psychometric properties in a first-visit outpatient sample. The revision primarily enhances semantic precision and structural differentiation without materially altering score distributions. The scale may serve as a refined instrument for dimensional assessment of anhedonia in similar clinical contexts, pending longitudinal and multi-site validation.
Effect of transcranial magnetic stimulation on prognosis in patients with postherpetic neuralgia and comorbid depression undergoing interventional neuromodulation therapy: protocol for a randomized double-blind placebo-controlled trial
BackgroundPostherpetic neuralgia (PHN) is often accompanied by depression, creating a vicious cycle that exacerbates symptoms and contributes to suboptimal treatment outcomes, even with interventional therapies. Repetitive transcranial magnetic stimulation (rTMS) has demonstrated potential in alleviating both pain and mood disturbances. However, its efficacy in enhancing prognosis when used alongside interventional neuromodulation therapy for PHN accompanied by depression remains inadequately explored and requires further investigation.ObjectiveThis study aims to generate preliminary evidence on the efficacy and safety of rTMS in enhancing prognosis and alleviating pain in patients with PHN and mild to moderate depression undergoing interventional neuromodulation therapy.MethodsThis study is a single-center, randomized, double-blind, placebo-controlled trial involving 174 adult patients with PHN. Participants will be randomly assigned, stratified by interventional neuromodulation therapy, to either the rTMS group (n=87) or the control group (n=87). Both groups will undergo either 10 Hz rTMS or sham stimulation for five consecutive days. The primary outcome is the incidence of poor prognosis at 3 months post-discharge. Secondary outcomes include the incidence of poor prognosis at 6 months post-discharge; Visual Analog Scale (VAS) sleep scores; short-form McGill Pain Questionnaire (SF-MPQ) scores; Self-Rating Depression Scale (SDS) scores; patient satisfaction; Pain Disability Index (PDI) scores; Multidimensional Fatigue Inventory-20 (MFI-20) scores; pregabalin oral doses; and the need for tramadol or antidepressants. Safety outcomes will include assessments of headache, pain at the stimulation site, neck pain, insomnia, muscle soreness, dizziness, nausea, tinnitus, irritability, tachycardia (heart rate > 100 bpm), and epilepsy. Data will be analyzed using a modified intention-to-treat approach.DiscussionThis study aims to provide preliminary evidence on the efficacy and safety of 10 Hz rTMS in improving prognosis and alleviating pain in PHN patients with mild to moderate depression undergoing interventional pain management.Trial registrationhttps://www.chictr.org.cn/bin/project/edit?pid=261070, identifier ChiCTR2500096978.
Vitamin A status is associated with sleep, clock genes, and symptoms in children with autism spectrum disorder
BackgroundVitamin A signals through retinoic acid receptors and may influence neurodevelopment and the expression of clock genes. However, the biological pathway linking vitamin A status to sleep disturbance in ASD remains insufficiently defined. This study aimed to examine associations between vitamin A status and sleep problems, core symptoms, and clock genes in children with ASD, and to explore the mechanistic role of RARβ in regulating core clock genes.MethodsThis observational study included 361 children with ASD. Clinical symptoms were assessed using the Children’s Sleep Habits Questionnaire (CSHQ); the Childhood Autism Rating Scale (CARS) and the Social Responsiveness Scale (SRS). Peripheral blood mononuclear cell (PBMC) mRNA levels of RARβ and clock genes (BMAL1 and CLOCK) were quantified by qPCR. RARβ expression was knocked down in mice by stereotaxic injection of adeno-associated virus.ResultsChildren with lower vitamin A levels exhibited more severe sleep problems and autistic symptoms. Vitamin A levels showed a weak positive correlation with the expression of RARβ and BMAL1. RARβ knockdown reduced the expression of RARβ and clock genes in mouse brain tissue. Chromatin immunoprecipitation quantitative PCR (ChIP-qPCR) confirmed RARβ occupancy at a predicted CLOCK regulatory region.ConclusionThis study provided evidence that vitamin A status was linked to sleep problems, symptom severity, and expression of clock genes in the morning in ASD. We also found that RARβ signaling may regulate the expression of clock genes. This finding provides new insights into the mechanisms underlying sleep disturbances in ASD, but further functional studies are needed to confirm these findings.
It Is the Journey, Not the Destination: Moving From End Points to Trajectories When Assessing Chatbot Mental Health Safety
Large language models are rapidly becoming embedded in everyday life through artificial intelligence (AI) chatbots that people use for practical assistance and companionship, as well as for support with mental health and emotional wellbeing. Alongside clear benefits, clinicians and public reports increasingly describe a minority of users whose interactions seem to drift over days or weeks toward strongly questionable convictions, delusions or suicidal crises. Importantly, clinically meaningful deterioration can occur even without overtly unsafe text outputs, via more insidious processes such as compulsive use and sleep disruption, as well as withdrawal from human contact and progressive narrowing of attention around the chatbot relationship. In this Viewpoint, we argue that risk often arises not at a single tipping point but through trajectory effects that accumulate across extended dialogue, and that prevailing safety evaluation approaches are misaligned with this reality because they primarily score risk at discrete conversational endpoints often reached through scripted dialogues lasting just a single turn or several turns. Mental health benchmarks and safety suites (including clinician-informed efforts) have advanced the field by testing refusal behaviour, toxicity, and adversarial prompting, but they often treat the last message as the unit of analysis and therefore miss when risk-relevant relational cues, signs of validation, contradiction handling, and shifts in certainty first emerge and how they compound. We propose that mental health safety assessment should shift from endpoints to trajectories by 1) treating the whole dialogue, not just the end result, as the focus of evaluation; 2) reporting turn-by-turn dynamics such as delusion confirmation and harm enablement, as well as timing and persistence of safety interventions; and 3) calibrating short multi-turn tests against longer, clinically realistic interaction sequences that can reveal context-length effects and drift. We further argue that transcript-only evaluation is insufficient in mental health contexts. Similar language can reflect very different internal states, and the relationship between expressed psychopathology and real-world harm is non-linear. Safety research should therefore incorporate proximal human outcomes after interactions (e.g., shifts in certainty, openness to counterevidence, arousal, urge to continue, and subsequent sleep or behaviour) and build prospective clinical surveillance infrastructure that supports consented transcript donation and linkage to health outcomes. Together, these steps would enable benchmarks that are clinically relevant and better aligned with the kinds of harms now being observed in real-world chatbot use.
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Opinion: When my child is in psychosis, the pediatric health care system can’t help us
I am sitting in a firm recliner with a wipeable surface during a two-day hospital admission for testing at our local children’s hospital. The chair is designed for durability, not sleep. The pillow beneath my head is flat and smells faintly of disinfectant. A thin hospital blanket scratches against my arms as I shift, unsuccessfully, trying to rest. The room is dim but never quiet. Monitors beep. Machines hum. Footsteps pass the door. Hospital noise does not fade. It embeds itself in the nervous system.
My 13-year-old is finally asleep. His thin body is curled beneath a blanket identical to mine. One shoulder peeks out, bruised from repeated injections of calming medication. A neon orange bandage marks the most recent one, given about an hour ago. I watch his chest rise and fall and allow myself a brief moment of relief.
Facing the Monster: My Journey Living with OCD and Finding Hope
by David Kedeme
I remember the day my white high top Puma sneakers my parents gifted me for Christmas became the exact opposite of the color they came boxed in. It was a post rainy day in middle school, on a mulch covered, semi grassy area we considered our soccer field with two benches representing goals. After enjoying an intense match, what I did not enjoy but assumingly brushed off was the fact of how dirty my shoes were. Fast forward to later that day, I spent hours cleaning the shoes, trying to restore them to their original look.
Something felt different than other times I cleaned.
Every speck had to be clean. The more time I spent, the more visible other “not as clean” areas of the shoes became, requiring their own dedicated time of cleaning. Slowly, this cascaded into many other aspects of life such as my bedroom and closet needing to be organized a certain way, a tornado of relentless doubts concerning my relationships, with this dark monster in my head controlling what I can do, think, and feel. It felt like an eternity but at the same time as if no time passed from when I first touched to clean those shoes to when I could not sleep in my own bedroom and instead slept downstairs due to not wanting to mess the space up and not being able to enter and exit my closet as easily, so needing to rewear clothes days on end. I thought that doing what the monster or voice or whatever it was wanted would lead me to peace, as the relief from the sky high anxiety and gloom that came from performing what I know now as compulsions came only to have what I learned were obsessions come back, if not stronger, reinforcing this vicious cycle. My parents noticed my change in behavior, from avoiding my room at most costs to being late to dinner by up to an hour or two at times. I had only vaguely heard of obsessive compulsive disorder, OCD, and brought the idea up to my parents. The landscape we were dealing with was completely new and I felt even more alone due to this in addition to the isolation the condition induces you to be in. But we began to look for therapists, where I started talk therapy, with the therapist trying their best but the therapy modality was not the right one for me. Next up was a hypnotherapist, which also did not work for me. I needed some action to be okay with the high emotion filled state I was in when the bouts came on, in other words, exposure and response prevention therapy. After doing some research, I landed upon NOCD, an OCD teletherapy and advocacy organization.
I could not believe what I was hearing through the basement, not my room, laptop screen about actually going into my room, and that was not even the worst part. I just had to open my closet, take clothes out, move items in my room, and not do anything. “Maybe it is, maybe it is not” was a phrase that my therapist told me throughout therapy. With the significant support of my family, therapist, and friends, I was able to be okay with not being okay. Exposure and response prevention therapy makes you face the monster, making you enter the state in which you experience high anxiety. The therapy makes you look the monster in the face and realize it was not that big, not talking or engaging with you, making you sit in the discomfort and not do anything you so desperately want to do. With this methodology and rigor, I was able to coexist with the beast, and slowly it shrank, still existing though. But that is okay. That happens.
OCD belongs to a category of disorders called Obsessive Compulsive and Related Disorders within the Diagnostic and Statistical Manual for Mental Disorders, Fifth Edition, a manual that influences not only how patients receive care but also research funding and medical training. Although not officially recognized in the manual, there are many discussed subtypes of OCD depending on the obsessions and or compulsions one experiences. Some people, like me, had symptoms that ebbed and flowed in terms of severity and percolated from subtype to subtype. My symptoms throughout my experience with the condition range from having to keep most of the items in my room a certain way, doubting whether I want to be with my partner, questioning my morals, wondering whether something happened in the past pertaining to people in my life even though it did not, and more. Throughout typing this, thoughts flood my head, similar to ones I experienced, say, six years ago.
I hope to be able to perform research in the condition as well as treat people who were and are in my shoes. With up to 242 million people worldwide meeting clinical diagnostic criteria for OCD, about 40 to 60 percent experiencing treatment resistant OCD, more than two thirds of the general public not being able to accurately identify OCD, and mental health still being stigmatized today, there is more needed to be done from all fronts. When one type of online treatment is sought, about two thirds of patients achieve a clinically significant outcome, but on average, it takes greater than seven years for someone to receive a diagnosis of OCD and it can take up to seventeen years for an individual diagnosed with OCD to receive treatment. This is a multifaceted problem that requires a multifaceted approach which requires a banding of people worldwide to come together to promote awareness of the condition and a safe space for people throughout who have OCD.
Today, as I am typing this, I still am experiencing many of the symptoms I have before. The condition does not just go away, but it does become more manageable. If you are struggling, there is hope, there is a way, no matter how impossible it feels. I felt as if there was none, no light at the end of the tunnel, spending many hours crying out asking why to a source I was not even aware of, answered only by my own repetitive thoughts. But as someone who has been there, you will be okay. Even if multiple therapeutic modalities do not work, you feel like you want to give up because a current exposure seems impossible to do, you feel more anxiety at times, you feel like you are letting people down if you do not improve, you feel like the monster you were once fighting off keeps going, keep going. Seek help in many ways, rely on your community, and for those who have a hard time finding one, we are here for you, the International OCD Foundation community, and I most certainly am as well. Thank you for reading this and I am sending you hope and luck wherever you are. You are never alone.
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The Role of Technology in Mental Health Advances
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Appetite and ingestive regulation. Body-focused and impulse habits. Cognitive focus and executive control. Dissociation and identity integration. Fear and threat response. Mood and emotional regulation. Motor and impulse regulation. Reality testing and perceptual stability. Sensory processing. Sexual drive and regulation. Sleep and arousal regulation. Sleep-related parasomnias. Social and attachment drive. Speech and expression. Bipolar, schizophrenia, insomnia. A medical device would be good.