Hi, thanks for the D2D.
Genes play a very important role in the development of Psoriasis. If you have a family history of psoriasis, you will have an increased risk of developing psoriasis. The development of psoriasis depends on an interplay of genetic and environmental factors. Psoriasis does not start at birth but often later in life, with the peak age of onset in the late teens are the twenties. You can develop childhood psoriasis though this is a less common presentation. If one parent has psoriasis, the risk of developing psoriasis is about 20%. If both parents your parents have psoriasis, the risk can go up to about 50%.
At 23, you have not developed psoriasis, so that is great. Your risk of developing psoriasis is definitely higher than someone who does not have a family history of psoriasis, but it is not invariable that you will develop psoriasis. There is a greater chance that you will not develop psoriasis, so stay positive.
