
Plaque psoriasis
Plaque psoriasis or psoriasis vulgaris, is the most common form of psoriasis. It is characterized by thick red patches of skin, often with a silver or white scaly layer. These patches can often be seen on the elbows, knees, lower back, scalp and facial psoriasis.

Guttate Psoriasis
Guttate psoriasis is a type of psoriasis that shows up on your skin as red, scaly, small, teardrop-shaped spots. It doesn’t normally leave a scar. You usually get it as a child or young adult. Less than a third of people with psoriasis have this type. It’s not as common as plaque psoriasis.

Pustular Psoriasis
Pustular psoriasis is a rare, immune-mediated systemic skin disorder characterized by yellowish pustules on an erythematous base with a variety of clinical presentations and distribution patterns.

Exfoliative Psoriasis
Erythrodermic psoriasis (EP) is a rare and severe variant of psoriasis vulgaris, with an estimated prevalence of 1%–2.25% among psoriatic patients. The condition presents with distinct histopathologic and clinical findings, which include a generalized inflammatory erythema involving at least 75% of the body surface area.

Erythrodermic Psoriasis
Erythrodermic psoriasis is a rare skin condition that causes a red rash to form over most of your body. The rash resembles a burn and can be as dangerous as one, causing chills, fever and dehydration. Erythrodermic psoriasis requires immediate medical attention.

Annular Psoriasis
Annular psoriasis is a type of psoriasis where the lesions form a ring-like (annular) shape with central clearing. This means that it often presents with an area of skin in the middle of the ring with no obvious lesion. The ring-like pattern can occur in both plaque and pustular psoriasis. Although these are distinct conditions, they can occur together or one following the other.
Types Of Psoriasis Based on Site
Psoriasis is an auto-immune disorder. It is a skin disorder that causes red, itchy scaly patches. Mostly found on the knees, elbows, trunk and scalp.

Scalp Psoriasis
Plaque psoriasis or psoriasis vulgaris, is the most common form of psoriasis. It is characterized by thick red patches of skin, often with a silver or white scaly layer. These patches can often be seen on the elbows, knees, lower back, scalp and facial psoriasis.

Palm-Planter psoriasis
Palmoplantar psoriasis is a chronic variant of psoriasis that characteristically affects the skin of the palms and soles and produces significant functional disability. It features hyperkeratotic, pustular, or mixed morphologies. Though historically difficult to treat, recent studies on biologic therapies have shown promising results for the treatment of palmoplantar psoriasis.

Flexor/inverse psoriasis
Inverse psoriasis represents a clinical variant of psoriasis that is sometimes difficult to diagnose due to its clinical similarity with other skin disorders involving the folds, mainly including mechanical intertrigo, fungal and bacterial infections, contact dermatitis, seborrheic dermatitis, and lichen planus. Dermoscopy represents a useful tool for an enhanced non-invasive diagnosis.

Nail psoriasis
It is opposite of plaque psoriasis. White pustules surround redlining. They are smooth and shiny in appearance and are mostly found on fingertips and toe tips. It can also be found on palm or foot sole. It involves joint pain.