Drugs may cause rashes as a side effect or due to an allergic reaction. Common drugs include the antihypertensive drug captopril, preservatives in creams and lotions, lanolin, topical antihistamines, topical antibiotics, and topical anesthetics. However, almost any drug can cause a rash.

Common examples of drugs and products that cause dermatitis include:

• Antihistamine ointment or cream
• Captopril:
• Hives
• Angioedema
• Lanolin ointment or cream
• Neosporin ointment or cream
• Penicillin:
• Hives
• Erythema multiforme
• Angioedema
• Preservatives
• Anesthetic ointment or cream