Fatigue Severity Scale
FSS = 9
Patient Not Suffering From Fatigue
Significatnt Fatigue Present
1.My motivation is lower when I am fatigued
2.Exercise brings on my fatigue
3.I am easily fatigued
4.Fatigue interferes with my physical functioning
5.Fatigue causes frequent problems for me
6.My fatigue prevents sustained physical functioning
7.Fatigue interferes with carrying out certain duties and responsibilities
8.Fatigue is among my three most disabling symptoms
9.Fatigue interferes with my work, family, or social life
About Fatigue Severity scale (FSS)

Fatigue is a prominent disabling symptom in a variety of medical and neurologic disorders. To facilitate research in this area, we developed a fatigue severity scale, subjected it to tests of internal consistency and validity, and used it to compare fatigue in two chronic conditions: systemic lupus erythematosus and multiple sclerosis. Administration of the fatigue severity scale to 25 patients with multiple sclerosis, 29 patients with systemic lupus erythematosus, and 20 healthy adults revealed that the fatigue severity scale was internally consistent, correlated well with visual analogue measures, clearly differentiated controls from patients, and could detect clinically predicted changes in fatigue over time. Fatigue had a greater deleterious impact on daily living in patients with multiple sclerosis and systemic lupus erythematosus compared with controls. The results further showed that fatigue was largely independent of self-reported depressive symptoms and that several characteristics could differentiate fatigue that accompanies multiple sclerosis from fatigue that accompanies systemic lupus erythematosus. This study demonstrates (1) the clinical and research applications of a scale that measures fatigue severity and (2) helps to identify features that distinguish fatigue between two chronic medical disorders.

Reference: Krupp LB, LaRocca NG, Muir-Nash J, Steinberg AD. The fatigue severity scale. Application to patients with multiple sclerosis and systemic lupus erythematosus. Arch Neurol 1989; 46:1121 ±23.

Calculator: Instructions: The FSS questionnaire contains nine statements that attempt to explore severity of fatigue symptoms. Read each statement and circle a number from 1 to 7, depending on how appropriate they felt the statement applied to them over the preceding week where 1 indicates strongly disagree and 7, strongly agree.
FSS = 9
Patient Not Suffering From Fatigue
Significatnt Fatigue Present