Mind that rheumatoid arthritis can have analogical symptoms. Joint painfulness is one more sign which unites these two types. Psoriatic arthritis can be confused, but there are significant differences. Distinctive features are asymmetric painful sensation in the injured areas as well as the presence of crimson-cyanotic skin. Remember that osteoplastic osteoporosis is less pronounced. For proper diagnosis and appropriate treatment of psoriatic arthritis, an examination by a rheumatologist is required. The target is to heal the joints.