A chronic condition known as fibromyalgia syndrome (FM) is characterised by widespread body pain, sensitivity, exhaustion, sleep disorder, and cognitive dysfunc-tion. [1] In addition, certain symptoms or syndromes, such as irritable bowel syndrome, chronic headache, depression, anxiety, restless leg syndrome, temporomandibular dys-Objectives: Long-term fibromyalgia syndrome (FM) causes widespread pain, sensitivity, fatigue, trouble sleeping, and cognitive issues. FM has no known cause despite extensive research. In this study, we looked at how bad fibromyalgia was in mothers of children with autism spectrum disorder (ASD). Methods: Gülhane Training and Research Hospital conducted this study. In the study, 40 children aged 6-10 were diagnosed with ASD in the child psychiatry department. The paediatric and outpatient clinic had 40 healthy controls without psychiatric disorders. The Beck Depression Scale, the Beck Anxiety Scale, the Fibromyalgia Effect Survey, and the Autism-Spectrum Questionnaire (ASQ) were used to test the mothers of the children in the study for depression, anxiety, the severity of their fibromyalgia, and autistic symptoms. Results: The clinical severity of ASD symptoms has been measured (CARS) using the Childhood Autism Rating Scale. ASD, fibromyalgia, ASQ, and CARS patients score higher than healthy people. There were no statistically important differences between the depression and anxiety scores of the healthy and ASD groups.We examined fibromyalgia severity in 40 ageand gender-matched mothers of children with ASD and 40 mothers of healthy children without psychiatric illness. Conclusion: Mothers of children with ASD had higher rates of fibromyalgia than mothers of healthy children.