What do systematic reviews say?

Summary of findings table ‐ Contact immunotherapy (diphencyprone or squaric acid dibutil ester) vs hair growth stimulants (minoxidil)

The review found no eligible studies for this question.

• Treatments for alopecia areata: a network meta‐analysis 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Canakinumab vs triamcinolone acetonide

The review found no eligible studies for this question.

• Interleukin‐1 inhibitors for acute gout 2014 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Sulphasalazine vs placebo

The review found no eligible studies for this question.

• Oral 5‐aminosalicylic acid for maintenance of surgically‐induced remission in Crohn's disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings table ‐ Cannabis vs placebo

• Cannabis and cannabinoids for symptomatic treatment for people with multiple sclerosis 2022 · Cochrane Headline outcomes only
  no estimate extracted
  8 studies · 1942 participants
  Low

Intervention not reported

• Gamma aminobutyric acid (GABA) modulators for amyotrophic lateral sclerosis/motor neuron disease 2017 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 128 participants
  Moderate

Intervention not reported

The intervention showed no clear difference in health‐related quality of life scores, measured by SF‐36 (range 0 to… (low certainty).

• Surgical versus medical interventions for chronic rhinosinusitis with nasal polyps 2014 · Cochrane Headline outcomes only
  MD 0.6
  1 study · 95 participants
  Low