Severe hair loss in dogs may be alopecia.

Canine alopecia refers to an abnormal shedding of hair on part or all over the body of a dog. There are many reasons for the disease in dogs. , most of the reasons are due to some diseases or pet owners making mistakes in caring for their dog's hair.

Causes of alopecia in dogs

Chemical substances irritate the skin
Frequent friction on the local skin can lead to localized hair loss. Moreover, the continuous use of some irritating chemicals on the surface of the dog's skin results in some chemical or physical factors on the skin. For Shar-Pei dogs, hair loss is mostly caused by frequent friction between the wrinkled skin on the surface of its body.
In addition to hair loss caused by some rare and powerful stimulants that damage the skin, frequent bathing by pet owners is also a very important reason. Many pet owners use their own shower gel on their dogs. Little do they know that most human shower gels are alkaline, and dogs' skin is neutral. Frequent use will irritate the skin.
Caused by some diseases
When dogs suffer from some skin diseases or are infected with bacteria, hair loss may also occur, such as bacterial skin diseases and dermatophytes. Infections, mite skin diseases, etc. Or feeding your dog food containing allergens can also cause generalized hair loss symptoms. If your dog has itching and hair loss, you should consider whether it is caused by a disease.

Hypothyroidism
Hypothyroidism due to a genetic defect is common in German Shepherd dogs. The pituitary gland of affected dogs is unable to produce sufficient Hormones, thus affecting the dog’s hair growth, metabolism, etc.

Lactation, pregnancy, etc.
When dogs are in a special period, they will also experience hair loss to varying degrees, such as before pregnancy, lactation, etc. Symptoms of temporary hair loss may occur a few weeks after the high fever period. Depending on the cause, the hair loss may be severe.

Inadequate care
Because the owner’s care is poor, the dog’s nutrition cannot keep up, or endocrine disorders occur, it can also cause hair loss in dogs. However, Usually the hair is sparse.