2023
Characteristics of trichotillomania and excoriation disorder across the lifespan
Lin A, Farhat L, Flores J, Levine J, Fernandez T, Bloch M, Olfson E. Characteristics of trichotillomania and excoriation disorder across the lifespan. Psychiatry Research 2023, 322: 115120. PMID: 36842397, PMCID: PMC10023474, DOI: 10.1016/j.psychres.2023.115120.Peer-Reviewed Original ResearchConceptsExcoriation disorderClinical characteristicsSkin-picking severityAttention-deficit/hyperactivity disorderCo-occurring conditionsBody-focused repetitive behaviorsObsessive-compulsive disorderSeverity scoreCurrent symptomsSignificant positive correlationTrichotillomaniaHyperactivity disorderDisordersSelf-reported anxietyAge 4High rateSubtypesSelf-report measuresSeverityCross-sectional survey responsesRepetitive behaviorsAdulthoodPositive correlation
2019
The impact of attention deficit hyperactivity disorder in obsessive‐compulsive disorder subjects
Blanco‐Vieira T, Santos M, Ferrão YA, Torres AR, Miguel EC, Bloch MH, Leckman JF, do Rosario MC. The impact of attention deficit hyperactivity disorder in obsessive‐compulsive disorder subjects. Depression And Anxiety 2019, 36: 533-542. PMID: 30990937, DOI: 10.1002/da.22898.Peer-Reviewed Original ResearchConceptsAttention deficit hyperactivity disorderAdult OCD patientsObsessive-compulsive disorderDeficit hyperactivity disorderOCD patientsClinical characteristicsExact testFeatures of ADHDHyperactivity disorderSubgroup of patientsAdult obsessive-compulsive disorderComorbid attention deficit hyperactivity disorderSpecific clinical featuresCross-sectional studyObsessive-compulsive disorder (OCD) subjectsLogistic regression analysisFisher's exact testBrazilian Research ConsortiumMann-Whitney testAdult patientsRheumatic feverDevelopment of interventionsClinical featuresObsessive-compulsive spectrum disordersLifetime prevalence
2015
Obsessive–compulsive symptoms are associated with psychiatric comorbidities, behavioral and clinical problems: a population-based study of Brazilian school children
Alvarenga PG, do Rosario MC, Cesar RC, Manfro GG, Moriyama TS, Bloch MH, Shavitt RG, Hoexter MQ, Coughlin CG, Leckman JF, Miguel EC. Obsessive–compulsive symptoms are associated with psychiatric comorbidities, behavioral and clinical problems: a population-based study of Brazilian school children. European Child & Adolescent Psychiatry 2015, 25: 175-182. PMID: 26015374, DOI: 10.1007/s00787-015-0723-3.Peer-Reviewed Original ResearchConceptsFamily History ScreenObsessive-compulsive disorderObsessive-compulsive symptomsSchool-aged childrenChild Behavior ChecklistUnaffected controlsPediatric-onset obsessive-compulsive disorderPresence of OCSPopulation-based studyComorbid psychiatric disordersMajor depressive disorderWell-Being AssessmentOCD groupBrazilian school childrenGroup of childrenPsychiatric comorbidityDepressive disorderClinical impactFunctional impairmentPsychiatric disordersClinical problemOCS groupDiagnostic groupsSignificant socio-demographic differencesSocio-demographic differencesObsessive-compulsive symptom dimensions in a population-based, cross-sectional sample of school-aged children
Alvarenga PG, Cesar RC, Leckman JF, Moriyama TS, Torres AR, Bloch MH, Coughlin CG, Hoexter MQ, Manfro GG, Polanczyk GV, Miguel EC, do Rosario MC. Obsessive-compulsive symptom dimensions in a population-based, cross-sectional sample of school-aged children. Journal Of Psychiatric Research 2015, 62: 108-114. PMID: 25702286, DOI: 10.1016/j.jpsychires.2015.01.018.Peer-Reviewed Original ResearchConceptsSchool-aged childrenPsychiatric symptomsFamily History ScreenAdditional clinical factorsSymptom dimensionsCommunity-based sampleObsessive-compulsive symptom dimensionsClinical factorsObsessive-compulsive disorderPsychiatric comorbidityClinical impairmentSchool impairmentCross-sectional sampleAge 6Clinical samplesFamilial aggregationBiological mothersChildrenBiological relativesSymptomsPrevalenceAge distributionImpairmentNon-clinical samplePresent study
2013
Brain mechanisms for prepulse inhibition in adults with Tourette syndrome: Initial findings
Zebardast N, Crowley MJ, Bloch MH, Mayes LC, Vander Wyk BV, Leckman JF, Pelphrey KA, Swain JE. Brain mechanisms for prepulse inhibition in adults with Tourette syndrome: Initial findings. Psychiatry Research 2013, 214: 33-41. PMID: 23916249, PMCID: PMC3932431, DOI: 10.1016/j.pscychresns.2013.05.009.Peer-Reviewed Original ResearchConceptsTourette syndromeFunctional magnetic resonance imagingHealthy subjectsTic severityWhole-brain functional magnetic resonance imagingYale Global Tic Severity ScaleTactile startle responseCase-control study designTic Severity ScaleCortical-striatal circuitsBrain activityMagnetic resonance imagingMultiple brain regionsLeft middle frontal gyrusMiddle frontal gyrusDegree of PPIPulse-alone stimuliBlock-design fMRI paradigmTic symptomsNeuropathological dataHealthy controlsPrepulse inhibitionDevelopmental neuropsychiatric disordersSensorimotor gatingLeft caudateAge and Gender Correlates of Pulling in Pediatric Trichotillomania
Panza KE, Pittenger C, Bloch MH. Age and Gender Correlates of Pulling in Pediatric Trichotillomania. Journal Of The American Academy Of Child & Adolescent Psychiatry 2013, 52: 241-249. PMID: 23452681, PMCID: PMC3745006, DOI: 10.1016/j.jaac.2012.12.019.Peer-Reviewed Original ResearchConceptsFrequent urgesCommon comorbid conditionsPediatric trichotillomaniaProspective longitudinal studyType of treatmentCross-sectional findingsClinical characteristicsComorbid conditionsStructured rating scaleTreatment trialsComorbid depressionRating ScaleAnxiety disordersOlder childrenTrichotillomaniaDecreased abilityLongitudinal studyMale participantsAgeChildrenGreater distressFemale participantsLower ratesSymptomsGender correlates