Using online health information for unknown symptoms common among young adults: a qualitative analysis of health-related web pages illustrating the need for numeracy skills, the ability to deal with uncertainty, and the risk of ruling out self-care.

Young adults experiencing unfamiliar symptoms commonly seek health information online. This study's aim was to explore how health information websites express and communicate health information about symptoms common among young adults and guide readers in regard to health, illness, and care. Symptoms commonly searched for by young adults were used as search terms. The resulting data comprised material from 24 web pages and was analyzed using content analysis. The foremost purpose of online health information is to try to narrow down the user's symptoms and then advise the user on what actions to take. This is done by first forming a foundation of knowledge through descriptions and explanations, then specifying the symptom's time, duration, and location, and finally giving advice on whether to self-manage symptoms or seek additional information about them. However, the uncertainty of the diagnosis may rule out self-care. For readers inexperienced with health care, forming a decisive conclusion about diffuse symptoms on the sole basis of online health information could be challenging. The necessity of numeracy skills and the ability to deal with uncertainty are highlighted. There is a discrepancy between health advice given online and readers' accessibility to health care that needs to be addressed in future policy and research.