📘 Topic: Stress 🔹 1. Definition: Stress is the body’s nonspecific response to any demand or threat (real or perceived), which disrupts its homeostasis. ✅ Selye’s Definition: “Stress is the nonspecific response of the body to any demand for change.” 🔹 2. Types of Stress: Stress can be broadly categorized into: 🔹 3. Causes / Stressors: Stressors can be: 🔹 4. Pathophysiology: Stress activates the Hypothalamic–Pituitary–Adrenal (HPA) axis: 🔹 5.