👉 Hysterioid, also known as a pheochromocytoma or pituitary adenoma, is a benign tumor that develops in the pituitary gland. It arises from the cells of the pituitary, which is responsible for regulating various bodily functions such as metabolism and hormone production. A hysterioid tumor can cause symptoms like nausea, vomiting, palpitations, headaches, and fatigue. They are usually asymptomatic until they become symptomatic, but the symptoms can
