What are these red itchy patches on my hips, knee, neck and back?

Many answers. Commonly psoriasis or eczema occur in those areas. They usually flare up during anxiety, depression, and stress. See your doctor for the correct diagnosis and treatment.

Related Questions

I'm concerned because I have swollen hands and knees and red itchy rash!?

Get evaluated. Then you need to have the problem evaluated by a doctor. You will not find the answer on the internet for this problem. Read more...
Arthritis rash can b. Inflammatory, and psoriais can be associated with a condition know as dactylitis and can affect the knees as psoriatic arthritis . Other causes are infection, gout, lyme disease, . Read more...