Cochrane · systematic review · CD007662

Pharmacotherapy for trichotillomania

Hoffman, J, Williams, T, Rothbart, R, et al. · Cochrane Database of Systematic Reviews · 2021 · Cochrane Library

Common Mental DisordersAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
30
current version
GRADE rated
28
No studies
2
Included studies
NR
No studies 2 · 6.7%Ungraded 0 · 0%Very low 5 · 16.7%Low 21 · 70%Moderate 2 · 6.7%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Antioxidants versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) or similar (no. of responders)
Antioxidants vs placebo
RR 2.25 [0.84, 5.99]1 study · 36 participantsLow
Downgraded: imprecision
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Antioxidants vs placebo
no estimate extracted1 study · 27 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsDropout rate
Antioxidants vs placebo
no estimate extracted1 study · 18 participantsLow
Downgraded: imprecision

Antioxidants versus placebo for trichotillomania in adolescents

Population: children with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) or similar (no. of responders)
Antioxidants vs placebo
RR 2 [0.28, 14.2]1 study · 8 participantsLow
Downgraded: imprecision
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Antioxidants vs placebo
no estimate extracted1 study · 6 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsDropout rate
Antioxidants vs placebo
no estimate extracted1 study · 6 participantsLow
Downgraded: imprecision

Antipsychotics versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) (no. of responders)
Antipsychotics vs placebo
RR 5.08 [1.4, 18.37]1 study · 25 participantsLow
Downgraded: imprecision
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Antipsychotics vs placebo
no estimate extracted1 study · 25 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsDropout rate
Antipsychotics vs placebo
no estimate extracted1 study · 25 participantsLow
Downgraded: imprecision

Cell signal transducers versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) (no. of responders)
Cell signal transducers vs placebo
RR 1.33 [0.57, 3.11]1 study · 38 participantsLow
Downgraded: imprecision
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Cell signal transducers vs placebo
no estimate extracted1 study · 38 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsDropout rate
Cell signal transducers vs placebo
no estimate extracted1 study · 38 participantsLow
Downgraded: imprecision

Glutamate modulators versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) (no. of responders)
Glutamate modulators vs placebo
RR 3.5 [1.34, 9.17]1 study · 50 participantsModerate
Downgraded: imprecision
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Glutamate modulators vs placebo
no estimate extracted1 study · 50 participantsModerate
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsDropout rate
Glutamate modulators vs placebo
no estimate extracted1 study · 50 participantsLow
Downgraded: imprecision

Glutamate modulators versus placebo for trichotillomania in children and adolescents

Population: children and adolescents with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) (no. of responders)
Glutamate modulators vs placebo
RR 1.19 [0.37, 3.77]1 study · 39 participantsLow
Downgraded: imprecision
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Glutamate modulators vs placebo
no estimate extracted1 study · 39 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventscDropout rate
Glutamate modulators vs placebo
RR 2.86 [0.12, 66.11]1 study · 39 participantsLow
Downgraded: imprecision

Opioid antagonists versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CGI‐I) (no. of responders) & NIMH Trichotillomania Severity Scale (NIMH‐TSS) (no. of responders as > 50% reduction)
Opioid antagonists vs placebo
RR 2.14 [0.25, 18.17]2 studies · 68 participantsVery low
Downgraded: imprecision, inconsistency
Reduction of TTM symptom severityMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS)
Opioid antagonists vs placebo
no estimate extracted1 study · 51 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse events
Opioid antagonists vs placebo
no estimate extractedNRNo studies

SSRIs versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment response
SSRIs vs placebo
no estimate extractedNRNo studies
Reduction of TTM symptom severityaMassachusetts General Hospital Hair‐Pulling Scale (MGH‐HPS) mean change score
SSRIs vs placebo
no estimate extracted1 study · 31 participantsVery low
Downgraded: risk of bias, imprecision
Tolerability of treatment ‐ dropouts due to adverse eventseDropout rate
SSRIs vs placebo
RR 3 [0.33, 27.62]2 studies · 78 participantsLow
Downgraded: imprecision

TCAs with predominantly SRI actions versus placebo for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaClinical Global Impressions ‐ Improvement Scale (CG‐I) (no. of responders)
TCAs with predominantly SRI actions vs placebo
RR 5.73 [0.36, 90.83]1 study · 16 participantsVery low
Downgraded: risk of bias, imprecision
Reduction of TTM symptom severityNIMH Trichotillomania Severity Scale (NIMH‐TSS)
TCAs with predominantly SRI actions vs placebo
no estimate extracted1 study · 16 participantsVery low
Downgraded: risk of bias, imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsdDropout rate
TCAs with predominantly SRI actions vs placebo
RR 4.45 [0.27, 73.81]1 study · 16 participantsVery low
Downgraded: risk of bias, imprecision

TCAs with predominantly SRI actions versus other TCAs for trichotillomania in adults

Population: adults with trichotillomania
3 questions
OutcomeEffectEvidenceStatus / GRADE
Treatment responseaPhysician‐rated Clinical Progress Scale
TCAs with predominantly SRI actions vs other TCAs
no estimate extracted1 study · 26 participantsLow
Downgraded: imprecision
Reduction of TTM symptom severityNIMH Trichotillomania Severity Scale (NIMH‐TSS)
TCAs with predominantly SRI actions vs other TCAs
no estimate extracted1 study · 26 participantsLow
Downgraded: imprecision
Tolerability of treatment ‐ dropouts due to adverse eventsDropout rate
TCAs with predominantly SRI actions vs other TCAs
no estimate extracted1 study · 26 participantsLow
Downgraded: imprecision