Distress often reveals itself as physical symptoms. The relationship between disease and symptomatology is a complicated interaction where the influence of psychological and social factors in the aetiology of distress should always be considered.

Travel can bring frustration whether it be in the air or on the ground. Disabled people are entitled to equality of opportunity but their opportunity for travel is often very restricted. The needs of psychotic patients and those in the rehabilitative phase of illness also need to be considered.

Many factors contribute to fatigue and insomnia in travel. Some of these are discussed including psychological and social factors, state of mood, fear and circadian rhythms. It is suggested that the solution to some of the problems of hazards of travel will come more from knowledge already acquired than from highly technical consideration.