Our expert says:
The most common reason for loss of hair near the tail base is because of fleas. Even a single flea can cause an allergy that may result in hair loss, especially in that area. Complete and absolute flea control is therefore most important. There are many other causes including trauma, mite infection, fungal infection, etc. If it gets bigger or is persistent, and there are definitely no fleas, your vet can test the area to try and find an answer.
Dr Malan van Zyl
Veterinary Specialist Physician
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