Can Benadryl cause dandruff in dogs?

Benadryl (diphenhydramine) is an antihistamine commonly used to treat Allergies in dogs, but it is not known to directly cause dandruff. However, if a dog experiences side effects such as dry skin or dehydration from Benadryl, this could indirectly contribute to dandruff. Additionally, underlying allergies or skin conditions that require Benadryl might also be the root cause of the dandruff. Always consult a veterinarian before administering any medication to your pet.