Materials and Methods: In this descriptive-correlational study, 194 mothers who have a child with mental disorders were selected from Tehran hospitals, Iran during 2018. Data were collected with Cohen and colleagues" Perceived Stress Scale, Jones" Irrational Beliefs Scale, Gilbert & Allan"s Entrapment Scale, and demographics questionnaire.

Results: The findings showed that the mean perceived stress was 29.26 ± 4.62, the mean sense of entrapment of participating mothers was moderate (external entrapment, 11.12 ± 8.16, and internal entrapment, 12.23 ± 10.05), and the mean irrational beliefs was above the moderate level (114.58 ± 22.5). There was a significant correlation between perceived stress and sense of entrapment (p = 0.003, r = 0.214) and between sense of entrapment and mothers" irrational beliefs (p < 0.001, r = 0.573); yet, there was no significant correlation between perceived stress and mothers" irrational beliefs (p = 0.738, r = 0.025).

Conclusions: Based on our findings, it may be concluded that given the importance of mental health of mothers parenting children with mental disorders, development of educational programs, referral to supportive foundations, and training of healthcare personnel for clarifying the situation and its present challenges are necessary for this group of mothers leading to the promotion of their health and the related factors.