Fatigue

Fatigue

Fatigue is one of the most common and frustrating symptoms experienced by people with multiple sclerosis (MS). Unlike ordinary tiredness, MS-related fatigue can feel overwhelming, persistent, and can appear even after a good night’s sleep or very little activity. Fatigue can have a big impact on everyday life, making it harder to work, socialise, or stay active.

People describe MS fatigue in different ways—it might feel like your body is weighed down, your mind is foggy, or you run out of energy suddenly and without warning. The causes are complex and may relate to the disease itself, the body’s response to MS, or the extra effort needed to cope with other symptoms.

Although MS fatigue can be challenging, there are strategies, supports, and treatments that can help you manage your energy and keep doing the things that matter to you. Talking to your healthcare team is a positive first step in getting the right support. You’re not alone—many people with MS experience fatigue, and help is available.

What is fatigue?
Fatigue in MS is a feeling of constant tiredness or lack of energy that does not improve with rest or sleep. Unlike usual fatigue, MS-related fatigue can be sudden and severe, affecting your ability to concentrate, make decisions, complete tasks, and enjoy activities. Many people describe it as an invisible weight or “total body shutdown.” It might also present as:

  • Trouble thinking clearly or making decisions
  • Low motivation or energy
  • Sleep problems or feeling unrefreshed after sleep
  • Reduced sex drive
  • Emotional changes, such as increased irritability or sensitivity

MS fatigue usually results from a combination of factors:

  • Primary fatigue happens when MS damages nerve pathways, causing signals to slow down or require more mental and physical effort. The immune system’s inflammatory proteins may also play a role.
  • Secondary fatigue can arise from pain, disturbed sleep, depression, anxiety, spasticity, medication side effects, inactivity, infections, stress, dehydration, or poor diet.
  • Temperature changes, especially increases in body temperature as little as 0.25°C, can temporarily worsen fatigue due to slower nerve transmission.
  • Some people notice fatigue follows a pattern, often peaking in the mid-afternoon.
  • Track your symptoms in a diary—note when you feel fatigued and any associated activities, foods, or emotional changes.
  • Discuss any sudden or worsening fatigue with your MS Nurse or GP, as it may signal infection, medication side effects, or another treatable issue.
  • If sleep disruption, pain, anxiety, or low mood are present, let your care team know. They may recommend blood tests, medication changes, sleep review, or psychological support.
Daily Strategies:

  • Schedule rest breaks and consider short naps (20 minutes or less) to avoid impacting nighttime sleep.
  • Adjust your routine to do harder tasks at peak energy times.
  • Use cooling strategies—air conditioning, cooling vests, iced drinks, and exercising in pools or cool rooms.
  • Use time and energy-saving equipment at work and home, and modify your schedule if possible.
  • Conserve energy in the kitchen with prepping ahead, bulk cooking, and using labour-saving devices.
  • Maintain a healthy diet rich in complex carbohydrates, B and C vitamins, iron, and potassium; avoid skipping meals, especially breakfast.
  • Stay hydrated (6–8 glasses of water daily).
Emotional and Social Management:

  • Seek support: talking with friends, whānau, peers, or MS Community Support Workers helps reduce isolation.
  • Learn to explain your fatigue to others—use metaphors (“It feels like I have the flu and ran a marathon without sleep.”).
  • Most management focuses on lifestyle changes, pacing, treating underlying issues, and regularly reviewing medications with your doctor.
  • Occupational therapists can recommend home/workplace modifications.
  • Physiotherapists can design safe exercise plans and teach energy-conserving techniques.
  • In rare cases, medications may be prescribed to target fatigue, but these require careful discussion of risk/benefit with your neurologist or GP.
  • Regular review and proactive coping—like keeping a fatigue diary and reassessing priorities—help empower you in symptom management.

General Information

Living with MS fatigue can be challenging, but support is available.

Symptom Management