Section: Overview
The patterns of hair growth vary with species and anatomic location on the body. For some animals, seasonal alterations are noted. In dogs and cats, a mosaic exists and coordinated shedding cycles occur.In some breeds the active or growing part of the hair cycle is prolonged, as in Yorkshire terriers, like it is in people. These breeds are more sensitive to drug therapy, like chemotherapy, that interfere with the hair cycle, and they develop alopecia as an adverse effect.Numerous factors affect hair growth. They include:
Demodicosis (red mange) is a common skin disease of dogs causes by a microscopic mite that are present in small numbers on all dogs. In predisposed individuals the mites increase in number causing disease....
Hypothyroidism is the clinical state associated with a deficiency of thyroxine (thyroid hormone), which causes slow cell metabolism in most body tissues.
Sarcoptic mange (also known as scabies) is a highly contagious disease caused by microscopic mites that invade the skin of healthy dogs and puppies and create a variety of skin problems.
How pruritus affects your dog’s health depends on the degree of the pruritus. Severe pruritus leads to intense scratching, which may result in painful skin lesions that may become infected.
Alopecia is the complete or partial lack of hair in any area of the skin where hair would normally be found. In dogs, it may be caused by self-trauma, hair follicle diseases or the failure of hair to grow...
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