**1. The 'Big Picture':** Pulpal pathologies are inflammations or infections of the inner tooth nerve. Antibiotics are NOT for pain relief but are strictly reserved for spreading infections with systemic symptoms. **2. The Master Classification:** | Condition | Main Symptom | Clinical Action | Antibiotics? | | :--- | :--- | :--- | :--- | | Reversible Pulpitis | Short pain | Fill the cavity | NO | | Irreversible Pulpitis | Spontaneous pain | Pulpectomy | NO | | Acute Abscess | Swelling/Throbbing | Drainage | YES (if fever) | **3. The 5 'Red Flags':** Fever, Trismus, Difficulty swallowing, Rapid swelling, or Failed local treatment. **4. The Memory Palace:** "No swelling, no fever? Keep the antibiotics in the lever!"