Intravenous immunoglobulin was effective in one case.In one case, the dramatic response to high-dose oral prednisolone together with pulse methylprednisolone with almost complete disappearance of the symptoms within a short period should induce consideration of corticosteroids.In another case, the subject was treated with haloperidol (6 mg/day) with some improvement in the psychomotor agitation and hallucinations, but even high doses of carbamazepine given to the subject failed to improve the spontaneous muscle activity. Plasma Exchange (PE) was initiated, and after the third such session, the itching, sweating, mental disturbances, and complex nocturnal behavior improved and these symptoms completely disappeared after the sixth session, with improvement in insomnia and reduced muscle twitching. However, one month after the sixth PE session, there was a progressive worsening of insomnia and diurnal drowsiness, which promptly disappeared after another two PE sessions.In one case, high dose steroid treatment resulted in a transient improvement, but aggressive immuno-suppressive therapy with cyclophosphamide was necessary to control the disease and result in a dramatic clinical improvement.In another case, the subject was treated with prednisolone (1 mg/kg body weight) with carbamazepine, propranolol, and amitriptyline. After two weeks, improvement with decreased stiffness and spontaneous muscle activity and improved sleep was observed. After another 7–10 days, the abnormal sleep behavior disappeared completely.In another case, symptomatic improvement with plasmapheresis, thymectomy, and chronic immunosuppression provide further support for an autoimmune or paraneoplastic basis.Although thymectomy is believed to be a key element in the proposed treatment, there is a reported case of Morvans Syndrome presenting itself post-thymectomy.
As it is also caused by a GNAS mutation, it is not clear whether it should be considered an entity separate from Ia. Presentation
Patients may present with features of hypocalcaemia including carpo-pedal muscular spasms, cramping, tetany, and if the calcium deficit is severe, generalized seizures. IQ is typically mildly depressed or unaffected. Additional characteristics include short stature, obesity, developmental delay, and calcification of the basal ganglia in the deep white matter of the brain.Type 1a Pseudohypoparathyroidism is clinically manifest by bone resorption with blunting of the fourth and fifth knuckles of the hand, most notable when the dorsum of the hand is viewed in closed fist position. This presentation is known as knuckle knuckle dimple dimple sign (Archibalds sign). This is as opposed to Turner syndrome which is characterized by blunting of only the fourth knuckle, and Down syndrome, which is associated with a hypoplastic middle phalanx. Related conditions
The term pseudopseudohypoparathyroidism is used to describe a condition where the individual has the phenotypic appearance of pseudohypoparathyroidism type 1a, but is biochemically normal. Diagnosis
Biochemical findings
hypocalcemia
hyperphosphatemia
elevated parathyroid hormone (hyperparathyroidism)
Suppressed calcitriol levels

Treatment
Calcium and Calcitriol supplements, the latter with a larger dose than for treatment of hypoparathyroidism.