Canine alopecia is a very common condition for which there can be many causes.
A lot of times dog owners come across large tufts of dog hair in their house but it may take quite a long time for the owner to understand the complexity of the issue.
Owners do not even notice the problem until their dog has lost quite a lot of hair and their coat has become considerably thin. Anything from allergies to hormonal changes can be the cause of alopecia.
In the majority of cases the problem is not so severe and can be easily corrected with proper medication. But at times it can be the symptom of fatal dog diseases.
If the hair loss in on both sides then it is a possibility of hormone problem, loss of hair patches may be the result of allergies.
Common things that cause allergies in dogs include antibiotics applied on skin, nickel, rubber, wool, chemical dyes, plastic and carpet sprays.
The best way to cure this is by removing the substance that is causing the allergy. If not done so increased allergy may even lead to the development of tiny blisters and bumps.
Thick hairless raised areas on joints like elbows are the reason for this type of hair loss.
Providing a softer mattress or comfortable bedding will help in relieving this problem.
Caused either by a benign tumor in the pituitary gland or the adrenal gland, this disease then spreads to the entire body.
It will lead to a situation of hair loss throughout the body except the head and extremities. Another hormone related problem is that of hypothyroidism where hair loss occurs due to the less production of thyroid hormone in the body.
Similarly fleas may also be responsible for alopecia in dogs, some breeds are extremely sensitive to fleas and can loose a lot of hair because of their presence.
Along with these there are many other reasons for a dog to lose hair. Some times even stress can cause this problem.