Not sure if my husband is just simply grouchy or in too much pain these past few days. He's not his usual jolly, happy self but instead, he gets easily irritated with the humid weather (naturally, because it's summer) and complaining of joint pains when cold at night. I am thinking he's experiencing arthritis pain as it is persistent around the knee area. He complains joint stiffness with excruciating pain. Hoping not serious, though as I am afraid if his arthritis symptoms persists, he might be a candidate for joint replacement. Very bad. Anyway, any immediate pain relief suggestions?