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Neuropsychiatric manifestations in patients of primary hyperparathyroidism and outcome following surgery.

BACKGROUND
A wide variety of psychiatric symptoms ranging from mild personality changes to severe depression and psychosis have been described in patients of PHPT. However, the psychiatric profile in Indian patients remains a mystery. It remains to be seen if surgery can alleviate the psychiatric morbidity and improve the quality of life of patients. Although, the pathophysiology remains largely unknown, we attempted to see if psychiatric morbidity correlated with serum calcium values.


OBJECTIVE
a) To study the nature and severity of neuropsychiatric manifestations in patients of hyperparathyroidism before surgery and their outcome after surgery b) To study their correlation with levels of serum calcium.


MATERIAL AND METHODS
This prospective study documented the occurrence of psychiatric symptoms among 14 patients of primary hyperparathyroidism (group I). 13 patients of gall stone disease (group II) and 12 patients of thyromegaly, undergoing total thyroidectomy (Group III) constituted the control groups. The relationship between such symptoms and degree of hypercalcemia was also studied. Assessment of psychologic symptoms, using the CPRS scale (validated in Hindi) and the scale for Memory and Intelligence for use in Hindi speaking population was carried out preoperatively and at 1 wk, 6 wk, 3, and 6 months postoperatively.


OBSERVATIONS
The hyperaparathyroid group had significantly higher levels of total serum calcium and PTH preoperatively, with biochemical normalization postoperatively. The preoperative CPRS rating of the 14 patients with primary hyperparathyroidism revealed pronounced psychiatric symptoms, with a mean total CPRS score of 20 +/- 8.7, compared with 10.5 +/- 6.9(II) and 12.7 +/- 5.6 (III) in the control groups. Statistically significant improvement was seen in the CPRS score, maximally at 6 weeks post operatively for the following symptoms: Sadness, lassitude, ache and pains, and fatigability. There was no memory and intelligence impairment in any of the groups pre or post operatively. No correlation was found between the serum calcium levels and the psychiatric morbidity.


CONCLUSIONS
The psychologic symptom distress is multidimensional and symptoms significantly improved by 6 weeks post parathyroidectomy. There was no memory and intelligence impairment in any of the groups pre or post operatively. No correlation was found between serum calcium levels and psychiatric morbidity.