Factors impacting the illness trajectory of post-infectious fatigue syndrome: a qualitative study of adults' experiences.

Observed Findings

• Healthcare-related barriers included misdiagnosis, symptom trivialization, delayed diagnosis, and lack of appropriate treatment and support.
• Patient-related internal factors that worsened outcomes included lack of knowledge about the condition, overestimating functional capacity, and ignoring body signals.
• Phase-specific patterns emerged, suggesting different factors impact illness trajectory at different stages of illness progression.
• Participants had high healthcare resource needs and experienced significant economic burden and vocational/role performance disabilities.
• Lack of professional recognition and understanding of PIFS contributed to delayed and inadequate care.

Inferred Conclusions

• Enhanced healthcare provider knowledge about PIFS and its phases could enable more timely diagnosis and appropriate, tailored interventions.
• Educating patients early about pacing and recognizing body signals may help prevent unnecessary disability progression.
• A phase-specific approach to care, addressing different impacting factors at different illness stages, may reduce unmet needs and societal costs.
• Systematic improvements in healthcare system response (diagnosis, validation, support) combined with patient education could significantly improve functional outcomes and reduce economic burden.

Remaining Questions