Suicidal ideation in the year following diagnosis of relapsing-remitting multiple sclerosis: A longitudinal perspective

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INTRODUCTION: Suicidal ideation (SI) is common in people with multiple sclerosis (pwMS) who have longstanding illness. Prevalence of SI in the weeks to months following diagnosis is unknown, as are factors associated with SI, and whether SI 'settles' over time for newly diagnosed individuals. METHODS: We investigated SI in the FutureMS cohort, a nationally-representative relapsing-remitting MS sample (n = 440) recruited within weeks of diagnosis. SI was considered soon ('baseline'; median 60 days) and 12 months after diagnosis. A validated mood screen classified individuals SI/non-SI. We analysed associations of clinico-demographic variables with SI and change in SI status. RESULTS: SI was present in 12.8 % (95 % CI = 0.10, 0.16) at baseline. Those with SI had greater disability and were more likely to be anxious, depressed, fatigued, report toileting difficulties and spasms. In regression analysis, baseline SI was associated with anxiety (p < 0.001) and depression (p = 0.002), though 16 % of those reporting SI scored just 'mild' for depression. At 12 months, 9.6 % (95 % CI = 0.07, 0.13) reported SI, non-significantly different than baseline. Individuals with poorest SI outcomes over 12 months had greater unemployment, disability, anxiety, depression, fatigue, toileting difficulties and spasms, but in regression analysis no variable was individually associated with SI change. LIMITATIONS: SI is complex but measured in this study by single-item question. CONCLUSION: SI soon after MS diagnosis is relatively common, not only when anxiety and depression are present, but also in individuals with only mild depression. Screening for SI is important, allowing clinicians to target support to newly diagnosed individuals.

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