Psoriasis is based on hereditary predisposition, which can be passed
from parents to children. However, in itself, the predisposition to psoriasis
does not determine either the time of occurrence of this disease, or the
intensity with which it will proceed in the future. The probability and time of
occurrence, as well as the severity of the first manifestation of the disease
or a new exacerbation (the so-called relapse) are characterized by very large
individual differences. The occurrence and course of the disease may depend on
the action of many factors. In many cases, the actions of many factors must
coincide before the threshold leading to the development of an acute disease is
overcome.
As the first manifestation of scaly lichen, and all subsequent exacerbations
can be caused by stress or strong emotional experiences experienced at work and
in the family. In addition, trauma and inflammation of the skin, infectious
diseases such as influenza, tonsillitis and bronchitis, the use of certain
medications, various foods, and much more can also be causative factors.
Diabetes mellitus, obesity or calcium deficiency can contribute to the
development of psoriasis. General factors in the form of harmful substances
contained in the air and in food (ozone, nitrogen oxides, sulfur compounds,
carbon monoxide, plant protection products and many others) can also contribute
to this. Internal factors, such as changes in hormonal balance (for example,
during pregnancy or puberty), can positively or negatively affect the clinical
picture of the disease.
Until now, there are no methods of therapy for psoriasis, allowing to achieve a
stable cure. The goal of treatment is to achieve a regression of the skin
manifestations, or, in other words, to return squamous lichen to the so-called
latent phase (squamous without skin manifestations). With the help of remedial
measures and appropriate preventive-oriented norms of behavior, it is sometimes
possible to achieve that asymptomatic periods can be extended for many years.