There are three main categories of<unk> es: primary, secondary and non-systemic. Primary systemic<unk>  Some patients with systemic<unk>  will have their multi-organ disease spread to the peripheral nervous system; this is primary<unk> . Some examples of systemic<unk>  disease are: IgA<unk> , Hypocomplementemic urticarial<unk> , polyarteritis nodosa (PAN) and anti-neutrophil cytoplasmic antibody (ANCA) associated<unk> es such as granulomatosis with polyangiitis (GPA), eosinophilic granulomatosis with polyangiitis (EGPA) and microscopic polyangiitis (MPA).<unk>  secondary to other disease Some patients with a non-vasculitic systemic disease or another illness such as infection or malignancy can subsequently develop<unk>  as a direct consequence of the former illness; this is secondary<unk> . Some examples of such illness which can cause<unk>  are: * Connective tissue diseases: rheumatoid arthritis, systemic lupus erythematosus, primary sjögren's, dermatomyositis. * Infectious diseases: hepatitis B, hepatitis C, human immunodeficiency virus (HIV), cytomegalovirus, lyme disease, human T-cell-lymphotrophic virus-I, parvovirus B19. * Malignancy. * Drugs (amphetamines, sympathomimetics, cocaine, etc.) * Vaccinations. Non-systemic<unk>  Non-systemic<unk>  (NSVN) is a diagnosis of elimination. When no systemic illness can be found, yet evidence of a<unk>  exists, a diagnosis of non-systemic<unk>  is made. It is a single-organ problem. A nerve biopsy is required in order to make the diagnosis of non-systemic<unk> . There are distinct subtypes of NSVN with evolving categorisation in the literature. Currently accepted subtypes are: * 'Classical' distal-predominant NSVN * Wartenberg migratory sensory neuropathy * Post-surgical inflammatory neuropathy * Diabetic radiculoplexus neuropathy (lumbosacral, thoracic or cervical predominant) * Neuralgic amyotrophy * Non-systemic skin/nerve<unk>  (for example, cutaneous PAN) 'Classical' distal-predominant NSVN There is an ongoing debate over this categorisation, particularly its overlap with the condition non-diabetic radiculoplexus neuropathy. This neuropathy involves a clinical picture where the nerve damage is distally predominant as demonstrated in a nerve biopsy. Warternberg migratory sensory neuropathy Warternberg migratory sensory neuropathy is typically a multi-focal neuropathy where there is pure sensory deficits. It is characterised by sudden-onset and chronicity as well as having a propensity for relapse. It generally resolves slowly with time. Postsurgical inflammatory neuropathy Postsurgical inflammatory neuropathy is typically a multi-focal neuropathy which manifests thirty days after a surgical procedure. It mostly presents with motor and sensory symptoms. It is generally a self-limiting condition that has resolved with and without treatment.
Vasculitic neuropathy
Diabetic neuropathy
Proximal diabetic neuropathy
Tropical neuropathy
Small fiber peripheral neuropathy
Peripheral mononeuropathy
Polyneuropathy
Alcoholic polyneuropathy