OBJECTIVE: To explore and compare the use of health services in people with multiple sclerosis (MS) with and without fatigue. METHODS: Over a period of 30 months, the use of health services in 48 MS outpatients with persistent fatigue and 36 without fatigue was studied. Data were collected from a computerized register and by interviews, and analyzed with regard to disease severity categorized as mild or moderate/severe MS. RESULTS: Fatigued people with mild MS used more hospital outpatient care and primary care including rehabilitation, and a higher proportion had transportation service, compared with non-fatigued people with mild MS. In moderate/severe MS, the differences were that non-fatigued people used more occupational therapy in primary care and a higher proportion had salaried service. Regardless of MS severity, informal care was more common among fatigued people. CONCLUSIONS: Overall, fatigued people with mild MS have more contacts with outpatient health care compared with non-fatigued people. There are few such differences in people with moderate/severe MS. The reasons for the differences in use between fatigued and non-fatigued people are not understood and need further exploration. Fatigued people more often receive informal care, thus support to caregivers are of particular importance if fatigue is present.