Date and age range defining. Generation X is the demographic cohort following the postâWorld War II baby boom, representing a generational change from the baby boomers, but there is debate over what this means because the end date of the baby boomer generation is disputed.
Causes. Psoriatic arthritis occurs when your body's immune system begins to attack healthy cells and tissue. The abnormal immune response causes inflammation in your joints as well as overproduction of skin cells.any people with psoriatic arthritis have a family history of either psoriasis or psoriatic arthritis. Researchers have discovered certain genetic markers that appear to be associated with psoriatic arthritis.
Plaque psoriasis is basically linked to an abnormal inflammatory reaction. Still, there are certain factors that precipitate the development of the skin disease. The following are considered the triggering environmental factors of plaque psoriasis: 1  Trauma or injury to skin. These may include cuts, burns and even insect bites. 2  Infection. This includes HIV- AIDS, which is basically a common ailment that can develop psoriasis. 3  Certain medications.