Peripheral neuropathy vs. gout….???

Just a question,my father is s/p Whipple in April and just finished his 12 week chemo regimen with gemcitabine for his cc dx in february2013. He had his first post tx scan last week and that is clear/ NED. He has been on Coumadin for a DVT in his left leg for 4 weeks but recently has developed a severe pain in his left foot that wakes him from sound sleep. My first thought was peripheral neuropathy from the Gem. But with its acuteness I was wondering about gout??? He has never had gout before. He does have a Drs visit this week but does anyone have any info regarding either condition and its correlation with cc and or gemcitibine treatments? I would appreciate any and all info, Thanks, Peg