Most common symptoms of pheochromocytoma except –
**Core Concept**
Pheochromocytoma is a rare, usually benign, tumor of the adrenal glands that produces excess catecholamines, such as **epinephrine** and **norepinephrine**. The symptoms of pheochromocytoma are primarily due to the effects of these excess hormones on the body.
**Why the Correct Answer is Right**
The most common symptoms of pheochromocytoma include **headache**, **palpitations**, and **hypertension**. These symptoms occur due to the systemic effects of excess catecholamines, which stimulate **adrenergic receptors** and increase heart rate, blood pressure, and vascular resistance.
**Why Each Wrong Option is Incorrect**
**Option A:**
**Option B:**
**Option C:**
**Option D:**
**Clinical Pearl / High-Yield Fact**
A classic symptom complex of pheochromocytoma is the **triad of headache, palpitations, and sweating**.
**Correct Answer:** D. Weight gain