<s>[INST] I am constantly hot and then chilled, my hands are cold, I get clammy, very uncomfortable. I do no sweat, heat stays inside my body, at times my forhead aches. I take 40M blood pressure pills, right now my b/P is 163/83 Something is wrong. I called my Doc. he says I am OK?? [/INST] Hello, Pheochromocytoma is a possibility, in view of fluctuating BP and other somatic symptoms. Alternatively, you may be having paroxysmal hypertension without obvious provocative factors & repressed emotional trauma causing condition called pseudopheochromocytoma. You may go for plasma levels of free metanephrines as initial test. Thyroid function test (Free T3, Free T4 & TSH) also won't be out of place. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Tushar Kanti Biswas, Internal Medicine Specialist </s>