Often you'll see swelling in your knees, ankles, feet and hands. Usually, a few joints are inflamed at a time. They get painful and puffy, and sometimes hot and red. When your fingers or toes are affected, they might take on a sausage shape.
Stiff joints are common, too. They're typically worse early in the morning.
Psoriatic arthritis might affect pairs of joints on both sides of your body, like both of your knees, ankles, hips, and elbows.
Pain and stiffness in your neck, upper back, low back, and buttocks could be from inflammation in the joints of your spine and hip bones.
A rare and very destructive form of arthritis rapidly damages joints at the ends of fingers and toes. They could stop working properly, which means you may have difficulty keeping your balance when standing as well as when walking. You may also have trouble using your hands.