PsA and psoriasis – what’s going on inside

Psoriatic arthritis (PsA), like psoriasis, is an autoimmune condition and as a result the two are targeted by a common culprit – your immune system. When it starts attacking healthy cells and tissues, the result can be inflammation – painful and swollen joints and overproduction of skin cells.


In the case of psoriasis, this inflammation happens in the skin, leading to the red, itchy and scaly patches known as plaques. In psoriatic arthritis, this inflammation happens inside the body, leading to swollen and painful joints and tendons.

Your body’s immune system is a wonderful thing, when it works well.

The “soldiers” of the immune system attack the body itself

Registered nurse Josiane Soucy Larocque tells how she explains to patients what’s happening in their bodies when they have PsA.