JMIR Publications

ABSTRACT

Background:

Rare diseases affect roughly 10 % of the global population, yet each disorder is uncommon and patients frequently endure lengthy diagnostic journeys (5–7 years). Online Health Communities (OHCs) have become an essential source of peer support and disease‑specific information, yet their quality, safety, and accessibility remain poorly characterised, particularly for rare‑disease patients.

Objective:

To develop a multi‑dimensional assessment framework for rare‑disease OHCs and to apply it to a large sample of web‑based communities and Reddit subreddits, thereby identifying gaps in organisational structure, content quality, technical safeguards, and certification.

Methods:

A multi‑dimension framework (organisation, communication, content, certification, AI) was derived from the literature and primary data analysis. We identified 174 web-based OHCs maintained by patient support groups or organisations across the USA, UK, Australia, Canada and Ireland via the EURORDIS and Orphanet databases, and an additional 66 Reddit‑based OHCs. Descriptive statistics summarised the prevalence of each framework dimension across the sample.

Results:

In term of organisational profile, 99.4 % of the 174 OHCs were run by patient support groups or organisations, 97.7 % were registered charities, and 49.4 % operated as chapters of larger international bodies. Majority of sites addressed a single rare disease; 43.1 % hosted patient‑to‑patient forums, and 82.8 % enabled sharing of patient stories and testimonials. With respect to content quality, 93.1 % provided symptoms and pattern information; 64.9 % offered self‑help resources; only 9.8 % supplied socio‑legal advice. From technology specific dimensions, 60.9 % used HTTPS, 35.1 % employed basic analytics tools, and 17.8 % deployed AI features; none held HONCode certification. Among Reddit-based OHCs, 63.6 % consistently discussed disease symptoms and patterns; 30.3 % provided self‑help content. None were formally operated by support groups or patient organisations, and all lacked analytics tracking, AI integration, or health‑information certifications.

Conclusions:

The quality of information, digital sophistication, and adherence to established standards in rare‑disease OHCs are markedly insufficient. Only a minority of communities utilise AI, analytics, or recognised certification schemes, and a large proportion rely on informal or community‑driven platforms such as Reddit. These findings underscore the urgent need for organisational and technical support to enhance the safety, reliability, and accessibility of OHCs that provide critical support to patients and their families.