Abstract
Temporal lobe epilepsy (TLE) is the type of epilepsy most frequently associated with psychiatric morbidity. Respective surgery for focal epilepsy remains the preferred treatment for medically resistant epilepsy. The aim of this chapter is to review what happens with psychiatric disorders once patients have undergone surgery.
Early studies demonstrated a post-surgical increase in the incidence rates of anxiety and depressive disorders, while recent studies found that the prevalence of depression and anxiety decreased 12 months after surgery. In spite of this improvement, de novo anxiety and depressive or psychotic cases can be seen. In particular, de novo psychosis ranges from 1% to 14%, with risk factors including bilateral temporal damage, tumors rather than mesial temporal sclerosis, and seizures emerging after surgery again.
Personality changes after temporal lobectomy are yet to be established, but decline in schizotypal behavior and neuroticism is the most replicated so far.
In children’s studies surgery resolved 16% of the participants’ psychiatric problems, while 12% presented a de novo psychiatric diagnosis, but further, more conclusive results are needed.
The main limitations of these studies are the inconsistent systematic post-surgical psychiatric evaluations, the small sample sizes of case series, the short follow-up post-surgical periods, and the small number of controlled studies.
A psychiatric assessment should be conducted before surgery, and most of all, patients with a psychiatric history should be followed after surgery.
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Pintor, L. (2021). Temporal Lobectomy: Does It Worsen or Improve Presurgical Psychiatric Disorders?. In: Jones, N.C., Kanner, A.M. (eds) Psychiatric and Behavioral Aspects of Epilepsy . Current Topics in Behavioral Neurosciences, vol 55. Springer, Cham. https://doi.org/10.1007/7854_2021_224
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DOI: https://doi.org/10.1007/7854_2021_224
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