Altitude sickness on Kilimanjaro

The mountain reaches a very high elevation, and trekking itineraries can gain sleeping height faster than some bodies acclimatise. Fitness and determination do not prevent altitude illness. A summit goal should never take priority over worsening symptoms, and descent remains the decisive response to deterioration.

Mild acute mountain sickness can present with headache together with nausea, dizziness, fatigue, reduced appetite or poor sleep after gaining elevation. Report these symptoms honestly to the guide. Concealing them to protect a summit attempt removes the chance to pause, monitor and descend before the condition becomes more serious.

Cold, exertion, dehydration, infection and lack of sleep can cause overlapping complaints, but they do not make neurological or breathing warning signs safe to ignore. Daily checks should consider symptoms and function, including whether the trekker can walk steadily, think clearly, eat and keep fluids down.

Choose an itinerary that allows more time for acclimatisation, confirm how the operator monitors illness, and understand the evacuation plan. Arrange a pre-travel consultation to discuss previous altitude reactions, medical conditions, regular medicines and whether preventive prescription medicine is appropriate.

During the trek, ascend at the planned cautious pace, drink according to thirst, eat regularly and avoid alcohol or unapproved sedatives. Stop further ascent when altitude symptoms appear. If they worsen or do not improve at the same elevation, descend with support; symptom medicine must not be used to push toward the summit.

Confusion, unusual behaviour, extreme drowsiness, inability to walk heel-to-toe, stumbling, breathlessness at rest, chest tightness, a wet cough, or blue or grey lips can signal severe altitude illness. Begin descent immediately with companions and activate the operator's emergency plan. Do not allow the affected person to descend alone.

Use supplemental oxygen or a portable pressure chamber if trained personnel have them, but do not let either delay evacuation. Repeated vomiting, fainting, a severe worsening headache or rapid loss of strength also needs prompt medical attention and a lower elevation.

Bring the route and sleeping-elevation plan to your appointment. Ask whether your health history changes your suitability for the trek, how to use any prescribed medicine, which side effects could mimic altitude illness, and what personal circumstances should trigger an earlier turnaround.