You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All the following diseases are associated with HILA B-27 & Uveitis, except - and explain in detail?
Features of seronegative spondyloarthropathies

Onset usually before 40 years
The absence of RA factor
HLA - B27 positive
Presence of uveitis
Examples Ankylosing spondylitis, Reitter’s syndrome, Psoriatic arthritis, Enteropathic arthritis, Reactive arthritis.