( National Psoriasis Foundation ) New research shows one in four people with psoriasis may have undiagnosed psoriatic arthritis, in addition to the up to 2 million people already diagnosed with the disease. Also, there's a significant delay of diagnosis for psoriatic arthritis.

(WHAS11) -- Arthritis causes pain to some 46 million people around the country.  Kentucky ranks number one as the state with the most arthritis patients, where 1.2 million people suffer from it each day. Most people don't realize that young children can also be affected by the disease. At 14-months-old, Bailee Allen was diagnosed with juvenile arthritis. At one point, she couldn't walk ...

SUE MANNING Associated Press LOS ANGELES Tahlula started life as a victim of bad breeding and will end it as a victim of arthritis. The Rottweiler had hip dysplasia and ruptured knee ligaments when she was adopted in 2006 at age 4. Ligament surgery followed, then a diagnosis of a dislocated spinal disc and arthritis so bad that the dog would cry in pain and sometimes stumble and fall. Her owner ...

Arthritis of the knee can be a life-altering condition but diagnosis is the first step to treatment. According to Walden University, three types of arthritis can affect the knee joint: Post-traumatic arthritis caused by injury or excessive wear and tear, osteoarthritis, and rheumatoid arthritis.

Golfer Phil Mickelson has openly talked about his experience with psoriatic arthritis. It's a type of arthritis unlike the others and can fuse joints, destroy bones, or both!