Hello and welcome to this lecture today we're going to be discussing hypothyroidism.

Now today's lecture is going to be more of a clinical application.

There's definitely going to be things that are high yield for board review, but it's definitely going to be helpful for those of you in practice right now.

So let's get into today's topic. We're talking hypothyroidism.

Now hypothyroid is is an endocrine disease right and ultimately what happens is

this results in a deficiency of thyroid hormone now we can really

categorize hypothyroidism into a few different categories.

We have primary, we have secondary, and we have tertiary hypothyroidism.

Now let's start off with primary hyperthyroid.

All right, so the thyroid gland, right?

This, the primary type is when the thyroid gland

isn't functioning.

And this is really gonna be the most common type

of hypotherroidism.

Secondary hypothyroidism is when we have a pituitary problem, right?

The pituitary gland isn't secreting enough T-S-H, thyrotropin secreting hormone and this is going to result in an underproduction

of thyroid hormone. We have T3 and T4. And then finally we have tertiary. This is when the hypotheramus

doesn't secrete enough TRH. This is thyrotropin releasing hormone and if we

don't have enough TRH, then this is going to result in under production of T.S.H and ultimately an underproduction of thyroid hormone.

And thyroid hormone is going to be T4 and T3. Now central hypotherroidism is going to encompass

both secondary and tertiary causes and in all honesty in clinical practice it's going to be very very difficult to

differentiate between secondary and tertiary however it's going to be very

...