EFNS guidelines on neuropathic pain assessment: revised 2009

History and bedside examination are still fundamental to a correct diagnosis, whilst screening tools and questionnaires are useful in indicating probable NP; QST is also useful for indicating the latter, and to assess provoked pains and treatment response. Amongst laboratory tests, LEPs are the best tool for assessing Adelta pathway dysfunction, and skin biopsy for assessing neuropathies with distal loss of unmyelinated nerve fibres.