Endocrine

Hypothyroidism

Underactive thyroid gland causing weight gain, lethargy, and skin problems.

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Expert guides

The under-active thyroid in dogs: the over-diagnosed, very-treatable one

If your dog has slowed down, put on weight without eating any more than usual, started seeking out warm spots, and lost coat in a thin, balding pattern that doesn't seem to itch, hypothyroidism is a fair thing to wonder about. It's a real condition, it's common, and here's the genuinely good news up front:…

Dr. Alastair Greenway10 min read

The thyroid and the skin: coat changes, recurrent infections and the derm overlap

If your dog has been losing coat in a slow, even pattern, or keeps getting skin and ear infections that clear on antibiotics and then come straight back, the thyroid is one of the first things worth ruling in or out. The skin is the system most owners notice first with hypothyroidism, and skin or coat change is the…

Claire Greenway8 min read

Levothyroxine for life: getting the dose right and what to expect

This is one of the genuinely happy stories in this part of the site. Once your dog has a properly confirmed diagnosis of an under-active thyroid, the treatment is a small daily tablet that's cheap, safe and usually transformative, and most dogs brighten up noticeably over the following weeks...

Dr. Alastair Greenway9 min read

Getting the thyroid diagnosis right: the tests, and the traps

If your dog has slowed down, put on weight without eating more, and started losing coat in a tidy, symmetrical, non-itchy pattern, hypothyroidism is a fair thing to suspect. It's a real disease, and once it's confirmed it's one of the most satisfying conditions in practice to treat. The catch is the word "confirmed".…

Claire Greenway9 min read

Breeds prone to Hypothyroidism

Hypothyroidism is seen more often in some breeds than others. If you have one of these, its breed guide covers what to watch for and where to get help.

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