Inverse Psoriasis gives sufferers red shiny patches inside skin folds like armpits and groins.
In this rare but dangerous form of Psoriasis, the main symptom is fiery red painful skin .
Up to half of those with psoriasis have nail changes. This is even more common in people who have psoriatic arthritis, which affects your joints.
This is a condition where you have both psoriasis and arthritis (joint inflammation).