Table 1

	Case 1⁵	Case 2⁶	This study
Age/sex	71/female	73/male	67/female
Headache	Yes	Yes	Yes
Fever	No	No	Yes
Visual loss	Yes	No	No
Facial diplegia	Yes	Yes	No
PMR^1-150symptoms	No	No	No
Latency between GCA^1-150 and PN^1-150	AIDP^1-150occurred 2 weeks before GCA	GCA preceded AIDP by 4 months AIDP	First episode of AIDP occurred 2 weeks before GCA
Laboratory tests
ESR^1-150 (mm/1st h)	125	125	94
CSF^1-150	Protein 0.1 g/l; acellular	Protein 3 g/l; acellular	Protein 0.56 g/l; cells 4/ml
Temporal artery biopsy	Not done	GCA	GCA
Nerve conduction study	Normal	AIDP	AIDP
Treatment	Prednisolone, 80 mg/day	Prednisone 75 mg/day, PEX^1-150	Prednisone 60 mg/day, PEX, IVIg^1-150
Clinical outcome		Spontaneous improvement of the AIDP, symptoms of GCA were controlled with steroids		TIA^1-150 during GCA prednisone treatment	Cure of GCA with prednisone; improvement of the AIDP with PEX and relapse 8 months later, clinically controlled with prednisone and IVIg
Clinical outcome				Cure of the AIDP with PEX

↵1-150 PMR = polymyalgia rheumatica; GCA = giant cell arteritis; PN = polyneuropathy; ESR = erythrocyte sedimentation rate; CSF = cerebrospinal fluid; AIDP = acute inflammatory demyelinating polyradiculoneuropathy; PEX = plasma exchange; TIA = transient ischaemic attack; IVIg = intravenous immunoglobulin.