Here's a list you might find useful.
Grapefruit, Trainwreck, Northern Lights 1, and Northern Lights x Jamaican are listed as good for Arthritis
Medicinal Strain List
(Afghanica) Nausea, pain
(Afghooie x Haze) PMS
(AK-47) Pain, nausea, depression, insomnia, headache
(Alien Train Wreck)...