Hi Shashi. Given your finger deformity and hip problems this sounds like arthritis. Rheumatoid arthritis is more likely to cause finger deformities while osteoarthritis is more likely to affect the large joints like the hip. But either type of arthritis can account for all of your symptoms. We cannot answer your question with any certainty. You should be seeing a doctor. Yes, chronic pain can affect your mental faculties in many way, including your memory.