1. Plaque Psoriasis
As the most common form of psoriasis, this type usually presents as red, patchy and flaky skin most commonly located on the knees, elbows, lower back and or scalp. It can be very itchy and sore and in severe cases skin in these areas can crack and bleed.
2. Guttate Psoriasis
Guttate presents as red spots on the skin, usually on the torso and limbs. This type of psoriasis is most likely to affect children or young adults. It is often quick to present and can be associated with respiratory infections, throat infections, stress and certain medication.
3. Inverse Psoriasis
Patches of red, shiny skin which is smooth in appearance. Inverse psoriasis usually appears in the skins folds particularly the armpit, groin, buttock and genital area. This type is linked areas that are inclined to rub and sweat and as such can present more severely in overweight people.
4. Scalp Psoriasis
Psoriasis which affects the scalp either in patches or all over. It usually presents and red patches of flaky skin. It can be itchy for some and not for others. Extreme cases can cause temporary hair loss.
5. Nail Psoriasis
Psoriasis which affects the nails by causing them to grow abnormally, dent (pitting), become discolored and/or separate from the nail bed. Nails can crumble away from the finger in severe cases. /div>
6. Palmoplanter Psoriasis

Psorias is which affects the palms of the hands and soles of the feet. Patches of skin may become red and expand to form scales and thickening of the skin. In these cases skin can itch and crack; this may make walking or performing certain task with the hands difficult. In some cases deep yellow pustules can appear – palmoplanter pustulosis.

7. Pustular Psoriasis
White blisters present on the skin filled with pus. This is a severe but uncommon form of psoriasis. The surrounding area is usually red. Pustular psoriasis is primarily found in adults and often around the hands and feet. It is not uncommon for this type to cover all of the body. There are three different forms of pustular psoriasis and each have variations in symptoms and location on the body. Common triggers for pustular psoriasis are pregnancy, internal medications, over exposure to UV light, steroids, infections and stress.

Generalized pustular psoriasis/von Zumbusch psoriasis Pus-filled spots usually over wide areas of skin / not infected/ may reappear in cycles of days or weeks / can lead to fever, weight loss, chills and fatigue. 
tular psoriasis
Pustules present on hands and feet (palms and soles) and develop into brown spots which peel away / may reappear in cycles over days or weeks

Pustules are found on the fingers and toes and eventually burst to leave sore red areas. These can be both painful and disfiguring in severe cases.
8. Erythromerdic Psoriasis
The skin becomes red and inflamed and can burn or itch. This is a rare form of psoriasis which can affect all of the body. Erythromerdic psoriasis can lead to a loss of fluid and protein and can further lead to other serious illness such as infection, dehydration, heart failure, hypothermia and malnutrition.