Could adrenal tumour only cause symptoms during sleep or after eating? Could these panic attack symptoms be a dysfunction of ths ANS?

ANS dysfunction. Periodic ANS dysfunction is not normally due to an adrenal tumor. You might expect high heart rate and/or blood pressure with such a condition. In such a case, the blood pressure would be consistently elevated. Panic attacks are a little different. Although there can be an elevated heart rate, there should also be a sensation of fear lasting for several minutes. Many adrenal tumors cause no S.