### 1. Identifying Drug Related Problems using PCNE Classification
Using the PCNE (Pharmaceutical Care Network Europe) Classification, here are nine potential drug-related problems (DRPs) and their associated causes:
1. **Unnecessary Drug Therapy**
- Cause: Overlapping therapy for similar indications (e.g., multiple antihypertensives).
2. **Needs Additional Drug Therapy**
- Cause: Patient not on statin therapy despite having