Prodromal symptoms of depression and self-administration of lithium

Prodromal symptoms to relapse in bipolar disorder

In a cyclical and recurring illness such as bipolar disorder, prodrome detection is of vital importance. This paper describes manic and depressive prodromal symptoms to relapse, methods used in their detection, problems inherent in their assessment, and patients' coping strategies. A review of the literature on the issue was performed using MEDLINE and EMBASE databases (1965-May 2006). 'Bipolar disorder', 'prodromes', 'early symptoms', 'coping', 'manic' and 'depression' were entered as key words. A hand search was conducted simultaneously and the references of the articles found were used to locate additional articles. The most common depressive prodromes are mood changes, psychomotor symptoms and increased anxiety; the most frequent manic prodromes are sleep disturbances, psychotic symptoms and mood changes. The manic prodromes also last longer. Certain psychological interventions, both at the individual and psychoeducational group level, have proven effective, especially in preventing manic episodes. Bipolar patients are highly capable of detecting prodromal symptoms to relapse, although they do find the depressive ones harder to identify. Learning detection, coping strategies and idiosyncratic prodromes are elements that should be incorporated into daily clinical practice with bipolar patients.

A systematic review of manic and depressive prodromes

BACKGROUND

This paper explores whether individuals with a mood disorder can identify the nature and duration of depressive and manic prodromes.

METHODS

Seventy-three publications of prodromal symptoms in bipolar and unipolar disorders were identified by computer searches of seven databases (including MEDLINE and PsycLIT) supplemented by hand searches of journals. Seventeen studies (total sample=1191 subjects) met criteria for inclusion in a systematic review.

RESULTS

At least 80% of individuals with a mood disorder can identify one or more prodromal symptoms. There are limited data about unipolar disorders. In bipolar disorders, early symptoms of mania are identified more frequently than early symptoms of depression. The most robust early symptom of mania is sleep disturbance (median prevalence 77%). Early symptoms of depression are inconsistent. The mean length of manic prodromes (>20 days) was consistently reported to be longer than depressive prodromes (<19 days). However, depressive prodromes showed greater inter-individual variation (ranging from 2 to 365 days) in duration than manic prodromes (1-120 days).

LIMITATIONS

Few prospective studies of bipolar, and particularly unipolar disorders have been reported.

CONCLUSIONS

Early symptoms of relapse in affective disorders can be identified. Explanations of the apparent differences in the recognition and length of prodromes between mania and bipolar depression are explored. Further research on duration, sequence of symptom appearance and characteristics of prodromes is warranted to clarify the clinical usefulness of early symptom monitoring.

Prodromal and residual symptoms in bipolar I disorder

The objective of the current study was to better understand the nature of prodromal and residual symptoms of mania and depression, as reported by patients with bipolar I disorder and their family members. Prodromal and residual symptoms of mania and depression were elicited from 74 patients with bipolar I disorder. In 45 cases, an adult family member provided similar information. Three clinicians classified the symptoms into six broad categories: behavioral, cognitive, mood, neurovegetative, social, and other. The clinicians also categorized symptoms as typical or idiosyncratic. Seventy-eight percent of the patients reported prodromal depressive symptoms and 87% reported prodromal manic symptoms; greater than half of the patients disclosed residual symptoms of depression (54%) and mania (68%). Within each of these four illness categories, cognitive symptoms were consistently the most common symptoms reported by patients. A substantial number of symptoms were idiosyncratic, particularly those reported for residual depression. Agreement between patient and family members on reported symptoms was strong for the prodromal phase of both polarities, but less so for the residual phases. These preliminary results suggest that patients with bipolar I disorder and their family members can identify prodromal and residual symptoms, that these symptoms are quite common, and that prodromal symptoms may be more prevalent or easier to identify than residual symptoms. Cognitive symptoms were consistently the most common symptoms reported by patients.