Complications and Risks of Motion Sickness

Motion sickness is usually harmless and passes once the movement stops. But in some situations it can cause problems.

Dehydration and electrolyte loss

Repeated vomiting can cause dry mouth, little urine, weakness and dizziness. Children, older adults and pregnant women are at higher risk. Oral rehydration solution helps. Seek care if drinking is not possible.

Persistent symptoms

• Mal de debarquement syndrome: a rocking or swaying feeling that continues after the journey, for days to months
• Tiredness and loss of appetite for a day or so

Safety risks

• Drowsiness from antihistamines can make driving, climbing or watching children unsafe
• Dizziness may lead to falls, particularly in older adults
• A driver who feels sick should stop and rest

Effects on daily life

Fear of travel, avoiding trips or missing work or school. Anticipatory anxiety can make it worse.

Hyperemesis in pregnancy

Severe or continuous vomiting in pregnancy is not simple motion sickness and needs a doctor.

Conditions that can be mistaken for motion sickness

Inner-ear disease, migraine, low blood sugar, carbon monoxide exposure and serious brain or heart problems can mimic it.

Emergency (112 or 102)

Severe vertigo with weakness, slurred speech, double vision, chest pain, fainting, confusion, or a severe sudden headache.

Reducing the risk

Use the simple prevention steps, keep fluids up and see a doctor if symptoms are strong, persistent or follow no motion.

Remember

Most motion sickness is mild and passes once the movement stops. Plan ahead, stay hydrated and see a doctor if symptoms are severe or last more than a day.