Naturalmente, il pediatra controlla l'arrossamento.

Naturalmente means naturally, of course, or obviously, depending on context. Here it works as a sentence adverb: it comments on the whole statement, not just one word.

So in Naturalmente, il pediatra controlla l'arrossamento, it suggests that checking the redness is the expected or obvious thing for the pediatrician to do.

The comma is used because Naturalmente is an introductory adverb placed at the beginning of the sentence. In English, this is similar to writing Naturally, ... or Of course, ...

The comma helps separate that introductory comment from the main clause.

Il pediatra means the pediatrician.

Il is the masculine singular definite article, used before most masculine singular nouns beginning with a consonant.

• il medico = the doctor
• il pediatra = the pediatrician

Even though a pediatrician could be male or female in real life, pediatra is a noun that normally takes:

• il pediatra for a male pediatrician
• la pediatra for a female pediatrician

It can be either, depending on the person being referred to.

This is one of those Italian nouns ending in -a that can still refer to a man or a woman. The article usually tells you the gender:

• il pediatra = the male pediatrician
• la pediatra = the female pediatrician

So in your sentence, il pediatra specifically refers to a male pediatrician.

Controlla is the third-person singular present tense of controllare.

The subject is il pediatra = the pediatrician, which is he/she in English, so the verb must match that subject:

• io controllo = I check
• tu controlli = you check
• lui/lei controlla = he/she checks

So:

• Il pediatra controlla = The pediatrician checks

Not usually in this sentence. Although controllare can sometimes resemble English to control, here it means to check, to examine, or to inspect.

So il pediatra controlla l'arrossamento means the pediatrician is checking or examining the redness, not controlling it.

This is a good example of a word that can mislead English speakers because it looks familiar.

L'arrossamento means the redness or the reddening.

It comes from arrossamento, a masculine singular noun. It refers to a reddened area, often on the skin, such as irritation or inflammation.

In medical contexts, arrossamento is a common word for redness.

Because arrossamento begins with a vowel, il becomes l' in front of it.

So:

• il libro = the book
• l'arrossamento = the redness

This shortening is called elision and is very common in Italian.

You know from the full form of the article and from the noun itself.

If the noun began with a consonant, it would be:

• il arrossamento → actually written l'arrossamento because of elision

Also, many nouns ending in -mento are masculine:

• il movimento
• il cambiamento
• l'arrossamento

So arrossamento is masculine singular.

Italian uses definite articles more often than English does.

Here:

• il pediatra = the pediatrician
• l'arrossamento = the redness

In English, you might sometimes say the pediatrician checks for redness, but Italian often prefers a definite article with nouns like this, especially when referring to a specific condition or symptom already understood in context.

Yes. The order is very normal:

• Naturalmente = introductory adverb
• il pediatra = subject
• controlla = verb
• l'arrossamento = object

So the structure is basically:

Naturally, the pediatrician checks the redness.

This is a straightforward subject-verb-object sentence.

Yes, it can. Italian allows some flexibility with adverbs.

For example:

• Naturalmente, il pediatra controlla l'arrossamento.
• Il pediatra controlla naturalmente l'arrossamento.

But the first version is more natural if you want Naturalmente to comment on the whole sentence. Putting it at the beginning is very common and clear.

The apostrophe shows that a vowel has dropped from the article.

Instead of saying il arrossamento, Italian smoothly joins the article to the noun:

• l'arrossamento

You pronounce it as one flow, with the l directly attached to the next word. The apostrophe is written, but in speech it just sounds like a smooth connection before the vowel.

Yes. The Italian present tense can often correspond to either:

• the pediatrician checks the redness
• the pediatrician is checking the redness

The exact English translation depends on context. Italian controlla by itself does not force one interpretation or the other.

Yes, mainly the noun arrossamento and the subject pediatra.

• pediatra is a medical professional: a pediatrician
• arrossamento is a medical or semi-medical way to refer to redness, especially skin redness or inflammation

So the sentence sounds natural in a healthcare context, such as an examination of a child.