My dog has hair loss in patches

Hi all I hope someone can help. Preferably vet/vet tech. But anyone is open to answer. My little Kiba’s hair has been falling out in patches. We noticed a small patch about 2 months ago and then progressed to this. We have taken her to the vet twice. She had a blood panel done and her thyroid came back low. We are waiting on the thyroid panel results hopefully tomorrow. Can this hair loss be caused by low levels of thyroid? The vet also gave us credelio for ticks, fleas, etc and clindamycin in case something bit her. She is in good spirits but looks like this 😢. Please help and TIA!

Hello!  It is good to hear that investigations for hypothyroidism are being carried out as this can, indeed, affect hair-loss.  Owners often put hair-loss down to old age in dogs, but usually age is not the cause.  Hypothyroidism is a common reason, as are Cushings or Addisons disease.  Other reasons for hair-loss can include Demodex mites, which are microscopic and don't itch (a skin scrape will help to rule them in or out).   However, all dogs have a few Demodex mites, which normally cause no signs.  In cases where they proliferate and cause hair-loss, there may be some deeper underlying cause - this may be a drop in immunity, caused by hypothyroidism or even cancer such as ovarian cancer - so even in the event of mites, depending on their assessment of the situation, your vet may ask to carry out more tests.