Final answer:
Spaniel seborrhoea is a skin condition in dogs that involves overproduction of sebum and leads to skin inflammation.
Step-by-step explanation:
Spaniel seborrhoea is a skin condition in dogs that is characterized by cracked or sore lips, inflammation of the tongue, and moist, scaly skin inflammation known as seborrheic dermatitis. The pathogenesis of Spaniel seborrhoea involves the overproduction of sebum, a lipid-rich substance secreted by the sebaceous glands of the skin, which leads to skin inflammation.