Introduction:
Multiple sclerosis (MS) is the most common chronic disease of the central nervous system. Multiple sclerosis is usually diagnosed in the second and third decades of life. Sexual health is a basic human right and an integral part of the personality of every human being. The most common sexual problems manifest themselves when interacting with another person.

Aim of the research:
Evaluation of sexual dysfunctions in people with a diagnosis of MS in Poland.

Material and methods:
The study involved 197 women and men between 18 and 45 years old. The research tool consisted of standardised questionnaires: the International Index of Erectile Function (IIEF), the Female Sexual Function Index (FSFI), and the Index of Marital Satisfaction (IMS).

Results:
All questionnaires values in the study group (SG) indicated a greater severity of dysfunction compared with the control group (CG). Also, after using cut-off points, sexual and partnership dysfunctions were found more often in the SG with all three questionnaires. Logistic regression analysis, adjusted for age, indicated that sexual dysfunctions in women were associated with a diagnosis of MS, and erectile dysfunction in men was associated with a diagnosis of MS.

Conclusions:
Both women and men with a diagnosis of MS have a greater risk of sexual dysfunction than the healthy population in Poland. This fact should be considered in a holistic diagnosis and therapeutic process.