03/02/2026
Some chronic conditions, including many forms of Ehlers-Danlos syndrome (EDS), are considered dynamic disabilities. In these conditions, symptom severity can fluctuate significantly over short periods of time. Functional capacity may vary from hour to hour or day to day, meaning an individual’s level of mobility, pain, fatigue, or autonomic stability is not static.
A person may appear well and fully engaged in one setting, yet experience substantial physical limitations shortly thereafter. They may move independently at one point and require mobility support later the same day. These fluctuations reflect the nature of the condition, not inconsistency, exaggeration, or recovery.
Importantly, observable functioning at a single point in time represents only a brief snapshot of a much more complex and variable clinical picture. Periods of relative stability do not negate the presence or severity of disease. So comments like “you don’t look sick” might actually be more harmful than helpful for someone navigating a dynamic disability.
In research, clinical care, and community settings, it is essential to recognize that invisibility does not equate to absence. When individuals report symptom burden or functional limitations, those reports should be taken seriously. Belief costs nothing.
