Excessive hair loss accompanies any dog illness.
Occurs, for example, in hormonal disorders: hypothyroidism, male feminizing syndrome, ovarian dysfunction; Cushing’s syndrome; bacterial, fungal and allergic skin infections; skin parasites (demodicosis, scabies), external parasites (fleas, lice, lice). It can be the result of a poor diet, mineral and vitamin deficiencies, malnutrition, too little omega-3 and -6 polyunsaturated fatty acids.
Often, however, the reason is prosaic – dog infestation. Then the coat loses its shine, the hair becomes matted, raised, dry and brittle. Sometimes there is a sledge reflex and anal licking, anemia, weight loss and diarrhea alternating with constipation. Regular preventive deworming will avoid these problems.