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Functional hyperthermia due to central dopaminergic impairment
A E Di Rosa1, L Morgante, M A Coraci
1First Clinical Neurology, University of Messina, Italy.
Functional Neurology
|April 1, 1988
Summary
Malignant neuroleptic syndrome, characterized by rigidity and hyperthermia, can occur in Parkinson's disease patients. Central dopaminergic impairment is hypothesized as the cause, affecting thermoregulation and heat dispersion.
Area of Science:
- Neuroscience
- Clinical Medicine
- Pharmacology
Background:
- Malignant neuroleptic syndrome (MNS) presents with rigidity, hyperthermia, and autonomic dysfunction.
- Parkinsonian patients undergoing a "drug holiday" may exhibit similar symptoms.
- Understanding the shared pathophysiology is crucial for patient management.
Observation:
- Clinical cases presented rigidity, mutism, and hyperthermia.
- Cutaneous pallor and diaphoresis were noted in affected individuals.
- Overlap in symptoms between MNS and Parkinson's disease on drug holiday was observed.
Findings:
- A central dopaminergic impairment is hypothesized as the unifying pathogenetic mechanism.
- Hyperthermia results from functional hypothalamic deficiency.
- Defective heat dispersion, due to impaired cutaneous vasodilation, contributes to hyperthermia.
Implications:
- This hypothesis provides a framework for understanding MNS in Parkinsonian patients.
- Further research into dopaminergic pathways in thermoregulation is warranted.
- Potential therapeutic strategies targeting dopaminergic function may be explored.