While eczema and psoriasis are both chronic skin conditions and cause similar symptoms (dry, red, itchy patches of skin), they have slight differences that may help you distinguish between the two.
Psoriasis is an autoimmune disorder that causes skin cells to grow too fast. This means that psoriasis patches are often thicker and potentially raised. Additionally, psoriasis tends to be more tolerable than eczema.
Compared to psoriasis, eczema patches can be unbearably itchy and may ooze and crust over when scratched. Psoriasis patches rarely ooze.
Furthermore, eczema and psoriasis are caused by different things. As mentioned above, eczema is thought to be caused by a combination of environmental factors and genetics. Psoriasis, on the other hand, is an autoimmune skin disorder.