Psoriasis lesions

How do psoriasis lesions manifest themselves?

Psoriasis lesions manifest themselves in a variety of ways, from small dots to large plaques, or even erythroderma which is a medical term to describe an intense and widespread reddening of the skin as a result of inflamed skin.

Psoriasis type Erythroderma
If the clinical picture is dominated by small lesions, it is described as Psoriasis Guttate.
If the lesions are the size of a coin or even the size of the palm of the hand, it is described as chronic plaque psoriasis.

There is also a subclassification of plaque psoriasis known as Psoriasis Vulgaris which is estimated to affect 90% of psoriasis patients. The term vulgaris comes from the Latin word meaning common. In other words, common psoriasis.

Psoriasis vulgaris or commonpsoriasis
If skin inflammation is predominant, pustules are the most important sign and are described as Pustular Psoriasis.
Definition of pustule: a small, circumscribed elevation of the skin containing fluid, usually purulent.
Palmoplantar psoriasis (feet and hands) may occur with or without the presence of lesions on other parts of the body. The scales are often deep-seated and often break.

The sacral region is the favourite part of Psoriasis. And if you are wondering what the sacral region is, we remind you that it is defined as the lower part of the spine and is located between the fifth segment of the lumbar spine (L5) and the coccyx. The sacrum is a triangular shaped bone with five segments (S1 - S5) fused together. In other words, at the division of the buttocks.

Flexible regions such as armpits, knees, elbows, breasts, groin, etc.

Mucous membranes as reproductive organs

Psoriasis on the nails

Psoriasis on the fingernails is more common than on the toenails. Nail changes are more common in patients with whole body psoriasis. (Calvert et al, 1963)

Psoriasis lesions

Psoriasis lesions are mostly of the polycyclic type, indicating that the lesion is made up of several smaller lesions and sometimes the lesion is demarcated by a whitish ring. (Woronoff 1926)

The main characteristics of a Psoriasis lesion are scaling, hardening and inflammatory redness.

The sensation of a Psoriasis lesion can be painful when the lesion is dry and cracked.

Although itching manifests itself during the gestation of the lesion, it is not considered a characteristic symptom of Psoriasis.

Psoriasis is not expressed in a static but in a dynamic way, i.e. lesions can grow and then regress. The period is dynamic and can be considered short (weeks to months) or long (months to years). Genetic elements and the triggers of psoriasis in each person play a role in this dynamic.

Latent psoriasis

Since psoriasis is partly genetically determined, this implies that there are many people with latent psoriasis which means that they already have psoriasis, but have not developed any symptoms.
Some triggers of latent psoriasis have been identified and are listed in the following table:

Infection	Demonstration
Fever	Psoriasis Vulgaris
Viral Infection	Psoriasis Guttate
Tonsillitis	Pustular Psoriasis
Bronchitis	Psoriasis Guttate
Pharyngitis	Psoriasis Guttate

Infections and psoriasis (Holzman et al, 1974) - These are just a few for reference.

There are also endocrine factors that activate latent psoriasis, such as hormones that play an important role in the pathology of psoriasis. That is why many cases of psoriasis start at puberty and many at menopause.

Psychogenic factors such as stress are well correlated with psoriasis activity.

On the other hand, drugs have also been identified that activate latent Psoriasis such as: