Telogen effluvium with dysesthesia has lower B12 levels and may respond to B12 supplementation

The pathogenesis of telogen effluvium with dysesthesia (TED) is not well understood and treatment options are limited. We investigated a subtype of telogen effluvium (TE) associated with dysesthesia (TED), which is defined as the presence of TE with severe itch, pain, soreness, burning, or formication in the absence of any inflammatory scalp disorder or medication associated with TE/dysesthesia. A retrospective chart review of 45 patients with telogen effluvium with dysesthesia (TED) and a control group of 45 patients with TE were evaluated for B12 levels.

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