Alopecia describes hair loss or excessive shedding, which could have multiple etiologies. Some common causes include stress, poor nutrition, self-trauma, and depilation due to allergies, infection, or parasitic infestations.
External parasite
External parasites have evolved to be small and well camouflaged within their host’s coats, so often, owners will not see that their pet has an external parasite problem. The three main parasites that cause dog skin problems are...