Psoriasis is an immune condition that can develop across any area of the body, including the scalp, hands, feet, and genitals.
The skin condition, which typically surfaces in early adulthood and then later in life from around the age of 50, is caused by a sped-up skin replacement process.
While normal human skin cells are usually replaced within 21 to 28 days, the skin cells for those with psoriasis is replaced within a few days, causing the skin to develop raised "plaques" that can be flaky, scaly and itchy. These patches of skin can be red or dark in colour depending on skin tone.
