Psoriasis is one of the most common chronic inflammatory skin diseases, due to both familial factors and autoimmune mechanisms. Prevalence among the Asian and African population is low (2%), while it reaches 11% in the Caucasian population. Psoriasis can go through periods of remission and periods of relapse.
Dermatological manifestations are very varied. It can be the most common form, called psoriasis vulgaris, characterized by clearly delineated and itchy erythematous plaques, which are mainly distributed on the torso, scalp, and limb extension surfaces (elbow and knee), or reverse psoriasis, characterized by erythematous plaques and spots. Guttate psoriasis is common in childhood and adolescence and is often triggered by streptococcal infections of the tonsils. As for pustular psoriasis, it is characterized by the presence of coalescing pustules distributed throughout the body or in localized areas.
About 40% of psoriasis patients experience psoriatic arthritis, a form of seronegative arthritis that occurs in the articulations and certain appendages of the skin, such as the nails.
Psoriasis has several intrinsic risk factors and comorbidities, such as:
There are also a number of extrinsic risk factors, such as mechanical stress, air pollution, infections, smoking, and alcohol consumption. It is therefore obvious that psoriasis has a profound influence on the patient’s quality of life.
There are several drug treatments that aim to reduce inflammation and help regulate the immune response that causes the psoriatic process. However, in combination with drug treatment, it has been found that a change in eating habits can lead to a marked improvement not only in psoriatic lesions but also in associated comorbidities.