00:03
As you recall, tinea corporis,
also known as ringworm
is a common fungal
infection.
00:09
The risk factors for this
are diabetes, HIV, obesity
patients who have pets,
and then moist areas or hygiene problems.
00:18
It is, of course, pruritic
and our patient’s lesion
was described as mildly itchy.
00:25
Most often,
you'll see on exam
singular or perhaps multiple raised,
annular erythematous lesions.
00:32
It’s why it's called ringworm.
It's annular type lesions
with an irregular border,
as we have in our patient
central clearing
and scale however.
00:41
Now, our patient is not seeing
any evidence of scale on her lesion.
00:45
There may also be pustules
with tinea corporis.
00:48
We treat it with a topical antifungal
and it’s very readily treatable.
00:53
Well, we know that our patient
does have some itchiness
but still,
this doesn't seem very likely
based on the description
and the image that we have.
01:00
I think we can safely take
tinea corporis off of our list.
01:04
Let's move on to talk
about seborrheic keratosis.
01:06
Now, this is a very common
benign skin tumor.
01:11
There may be some
hereditary features.
01:13
Patients whose parents
had a lot of these lesions
are very likely to
develop it themselves
and they tend
to increase with age.
01:20
Sometimes, they're referred to
as the barnacles of aging
growing on the side of your ship
as you get older.
01:26
They are described
as exophytic.
01:28
Exophytic means that
they are outwardly growing
or growing out of the skin
as opposed to infiltrating into the skin.
01:35
You'll oftentimes see terms
like waxy or greasy.
01:39
They're brownish black
in coloration
and they're stuck-on
in appearance.
01:43
That's again one of those terms
you should look for on the boards.
01:46
They're papules, nodules,
they may be plaques
and they evolve very slowly
over months to years.
01:53
Treatment is generally
you just follow them or ignore them
but if they're in particular areas
where they're bothersome
or maybe on a brow line
or in a place where
cosmetic appearance matters
you can remove them
with curettage or cryotherapy.
02:09
It doesn't sound like
that's what our patient has.
02:11
She has a very flat lesion
that has irregular borders
and it's in a
sun-exposed area
so this doesn't really fit
with seborrheic keratosis.
02:21
Let's take that one off
of our list, too.