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Table 2 Number of cases with adverse events after norepinephrine (NE) and placebo injections

From: Norepinephrine-evoked pain in fibromyalgia. A randomized pilot study ISCRTN70707830

  Fibromyalgia Rheumatoid Arthritis Healthy Controls
  (n = 20) (n = 20) (n = 20)
  placebo NE placebo NE placebo NE
Spreading of pain 0 8 0 0 0 0
Pale halo 0 3 0 1 0 1
Paresthesias 5 2 4 3 5 2
Palpitations 0 1 0 0 0 0
Sweating 0 1 0 0 0 0
Distal swelling 0 1 0 0 0 0