Specific Polyneuropathies Flashcards
2 mixed axonal and demyelinating neuropathies
Diabetes and uremia
Nerve biopsy finding of leprosy
Foamy histiocyte invasion
3 different uniform demyelinating mixed sensorimotor neuropathies
HMSN I, III, IV
Which axonal sensorimotor neuropathy causes uveitis
Sarcoidosis
What kind of neuropathy is multifocal motor neuropathy
Demyelinating motor neuropathy
What distinguishes HMSN II from the other ones?
Less foot intrinsic involvement.
3 segmental demyelinating motor and sensory neuropathies
AIDP (GBS), CIDP, leprosy (Hansen’s disease)
What would CSF analysis show for HMSN I, III, IV?
Increased protein
Is weakness in CIDP more proximal or distal
Proximal
Which axonal sensorimotor neuropathy has foot or wrist drop
EtOH
Which toxin causes blue lines in gums
Lead
What would nerve biopsy show for HMSN I, III, IV
Onion bulb formation
Which axonal sensory neuropathy results in nephrotoxicity
Cis-platinum toxicity
3 axonal sensorimotor neuropathies
EtOH, amyloidosis, sarcoidosis
Which toxin causes lower limb weakness
Vincristine
3 main toxins that lead to neuropathy
Lead, vincristine, dapsone
4 axonal sensory neuropathies
Cis-platinum toxicity, friedreich’s ataxia, sjogren’s, Vit b6 toxicity
Most common CN affected in AIDP
CN 7
Which axonal sensory neuropathy results in WC use by 16 yo
Friedreich’s ataxia
Nerve biopsy of axonal sensory neuropathies
Abnormally large axons
Which HMSN has retinitis pigmentosa
HMSN IV
Which axonal sensorimotor neuropathy has birefringence with congo red staining
Amyloidosis
HMSN I, III, IV are also known as
I = Charcot Marie Tooth III = Dejerine Sottas IV = Refsum's Disease
UA findings seen in porphyria
Deep red
Which axonal sensory neuropathy has pes cavus deformity
Friedreich’s ataxia
Amyloidosis neuropathy results from amyloid deposits in the …
DRG
3 Axonal motor > sensory neuropathies
- Porphyria
- Toxins
- HMSN II
First electrodiagnostic sign of CIDP
Abnormal F-wave
Which toxin causes progressive onset upper limb weakness
Lead
Which axonal sensory neuropathy is associated with RA
Sjogren’s
Most common cause of peripheral neuropathy worldwide
Leprosy
Which axonal sensorimotor neuropathy causes bilateral hilar adenopathy
Sarcoidosis
Which HMSN has floppy baby
HMSN III
Which toxin causes ascending foot and hand neuropathy
Dapsone
Which toxin causes blindness and epilepsy
Lead
Which of HMSN has distal motor more than sensory of the LE > UE in stocking glove pattern
HMSN I
Etiology of porphyria
Defect in heme synthesis
Which toxin causes basophilic stippling in RBCs
Lead
Which HMSN has bilateral foot drop
HMSN I
EDx finding indicative of multifocal motor neuropathy
Multifocal motor conduction block
Which toxin causes wrist drop
Lead
Which of HMSN is autosomal dominant vs recessive
I, II = dominant
III, IV = recessive
Which of HMSN I, III, IV has later onset?
HMSN IV - 3rd decade. The other 2 are within 1st 2 years
What distinguishes demyelinating AIDP from axonal AIDP?
Axonal is areflexic
Which toxin causes methemoglobinemia
Dapsone
Which axonal sensorimotor neuropathy results in purpura
Amyloidosis
Most common type of HIV related neuropathy
Distal symmetric polyneuropathy
Csf findings of AIDP and CIDP
Increased protein
What treatment do you use for CIDP that you do not use for AIDP
steroids
Which axonal sensory neuropathy has lhermitte’s sign
B6 toxicity
Treatment of AIDP
Plasmapharesis, IVIG