JPFS can be chronic in nature and can necessitate a multidisciplinary approach to the ongoing treatment of the disorder. The pain experienced is modulated by factors such as activity, anxiety, stress, and weather changes. Juvenile fibromyalgia
In Finland, the prevalence of WSP was 9.9%, with no sex difference. The majority of twin pairs with WSP were discordant. The tetrachoric correlations for male MZ (r = 0.38), male DZ (r = 0.37), female MZ (r = 0.59), female DZ (r = 0.54), and opposite-sex pairs (r = 0.43) showed little difference by zygosity.