Genetics
The biggest risk factor for plaque psoriasis is family history. Indeed, more than 30 percent of the reported cases have at least one family member with the condition. The risk tends to be higher when the disease occurs to both parents. Currently, researchers have not identified the genetic links. However, they have found out some areas on a gene linked to symptoms of plaque psoriasis. People with this condition are more likely to have a chromosomal mutation of the gene. More research is needed in the future to break the genetic code, which can help reduce the risk. [1]
