Essential oils can counteract the action of some homeopathic remedies

A 74-year-old male with a history of chronic emphysema is complaining of sudden onset of shortness of breath. He appears to be in acute respiratory distress. Physical exam of the anterior chest wall reveals crepitus. Based on the patient's history and physical exam, you would suspect which of the following conditions?

a. Spontaneous pneumothorax b. Congestive heart failure c. Acute bronchitis d. Carbon monoxide poisoning

Intraoral trauma, hormonal changes, and some dietary substances seem to be able to trigger which of the following diseases?

a. Primary herpes b. Varicella c. Aphthous ulcers d. Erythema multiforme e. Angioedema