Gait disturbance is common in patients with Alzheimer's disease (AD). The aim of this study was to analyse the clinical gait syndromes of patients with AD using Nutt's classification. Fifty-five patients who satisfied the NINCDS-ADRDA criteria for probable AD and 55 controls were recruited from a geriatric and a psychogeriatric unit. Patients with classical musculoskeletal or neurological syndromes causing gait disturbance were excluded. A standardized neurological examination was carried out in all subjects. Twenty-two (40%) patients and ten (18%) controls had a higher level gait disorder (p < 0.01). The pattern of gait disturbance in AD patients varied according to the stage of the disease. Cautious gait was the commonest gait disorder in AD patients with mild dementia, while frontal gait disorder was the commonest disturbance in patients with severe dementia. The prevalence of frontal release signs (gegenhalten or any primitive reflex) was highest among patients with frontal gait disorder.

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Research into the effect of treatment on phobic and obsessional disorders has been hampered by the need for agreed and acceptable criteria in clinical evaluation and therapeutic comparison. Methods of measurement now available, including two recently developed scales, are described.

A young man was followed-up over three years who had severe obsessive-compulsive rituals and ruminations, interpersonal deficits, complicating depression and a history of childhood autism. Intensive behavioural treatment was given in an operant framework, with exposure in vivo, modelling, response prevention and social skills training. Compulsive rituals improved markedly and lastingly, but ruminations and social defects persisted. When intercurrent depression occurred dothiepin facilitated behavioural treatment. Adjustment remained fragile. Minimum maintenance treatment in the community could not be adequately arranged, so that gains made in hospital were partly lost at follow-up, despite continuing improvement in rituals.

SUMMARYAn eight-year retrospective evaluation of referrals to a psychogeriatric consultation service demonstrated a highly significant linear increase of total referrals with a selective change of case mix that included more depressions and fewer cases of acute confusion or referrals with no psychiatric disorder. This did not occur with referrals from general practice, where case mix remained stable though total referrals also increased. It is suggested that this selective change relates to an educational influence of the specialist consultation service operating within the hospital and represents a desirable change of referral behaviour. The degree of psychiatric morbidity on general hospital wards far exceeds the capacity of a consultation service whose primary objective must be education to enable non-psychiatrists to detect and manage the majority of these disorders without recourse to specialist referral. Research that will further define the elements of the educational process that have greatest impact is needed and offers a new research direction for liaison psychiatry of old age.