Yanık yarası artık sızlamıyor.

Because yanık yarası is a very common Turkish noun-compound pattern.

• yanık = burn
• yara = wound
• yara-sı = the compound form of yara

In Turkish, when one noun modifies another noun, the second noun often takes a suffix like -ı / -i / -u / -ü (or -sı / -si / -su / -sü after a vowel). So:

• yanık yarası = burn wound
• baş ağrısı = headache
• diş ağrısı = toothache

So here yarası does not literally mean its wound. It is just the normal way Turkish forms this kind of compound.

It is best understood here as the first part of a compound, meaning something like burn.

That said, yanık can also behave like an adjective in other contexts:

• yanık ekmek = burnt bread
• yanık koku = burnt smell

But in yanık yarası, it is more natural to think of it as a noun-like modifier inside a compound: burn wound.

So for learners, the safest interpretation is:

• yanık yarası = a wound from a burn / a burn wound

In this sentence, artık means no longer or anymore.

That is a very common use of artık in negative sentences:

• Artık gelmiyor. = He/She doesn’t come anymore.
• Artık korkmuyorum. = I’m not afraid anymore.

In positive sentences, artık can also mean from now on:

• Artık erken yatacağım. = From now on, I’ll go to bed early.

So here, because the verb is negative, artık is understood as no longer / anymore.

It breaks down like this:

• sızla- = ache, sting, throb
• -m- = negative
• -ıyor = present continuous / progressive
• third person singular has no extra ending here

So:

• sızla-m-ıyor = it is not aching / stinging

This is a very typical Turkish verb structure.

Because when the negative suffix -ma / -me comes before -iyor, the vowel of the negative suffix drops.

So the underlying structure is roughly:

• sızla-ma-ıyor

but in real Turkish it becomes:

• sızlamıyor

The same thing happens in many verbs:

• gel-me-iyor → gelmiyor
• anla-ma-ıyor → anlamıyor
• uyu-ma-uyor → uyumuyor

So sızlamıyor is completely regular.

Because Turkish very often uses -iyor for a present, current situation.

In English, you might say:

• It doesn’t sting anymore
• It isn’t stinging anymore

Turkish commonly uses -iyor for that kind of meaning:

• sızlamıyor

This focuses on the current state: it is not hurting now.

If you used the aorist form sızlamaz, it would usually sound more general, like a rule, tendency, or habitual fact:

• Yanık yarası artık sızlamaz. = The burn wound no longer hurts / doesn’t tend to hurt.

That is possible in some contexts, but sızlamıyor is the more natural everyday choice for a present condition.

Turkish does not have articles like English the and a/an.

So Turkish often leaves definiteness to context.

• yanık yarası can mean the burn wound or a burn wound, depending on the situation.

In this sentence, context probably makes it clear which one is meant. English usually has to choose, but Turkish does not.

Because Turkish is usually a verb-final language.

A very common Turkish word order is:

• subject + other information + verb

So here:

• Yanık yarası = subject
• artık = adverb
• sızlamıyor = verb

That gives:

• Yanık yarası artık sızlamıyor.

This is normal Turkish sentence order.

Yes, Turkish word order is flexible, and artık can sometimes move for emphasis.

For example, you may also hear:

• Artık yanık yarası sızlamıyor.

But Yanık yarası artık sızlamıyor is very natural and neutral.

In general, putting artık close to the verb phrase is very common when it means no longer / anymore.

Good question. These pain verbs overlap, but they are not exactly the same.

• sızlamak = to ache, sting, throb, smart
  This often suggests a lingering, sharp, stinging, or throbbing pain.
• ağrımak = to ache / hurt
  More general.
• acımak = to hurt, sting, smart
  Often used for pain caused by contact, irritation, cuts, etc.

So sızlamak is a good choice for a wound because it suggests that unpleasant stinging/throbbing feeling.

Depending on context, other verbs could also be possible, but sızlamak sounds very natural here.

The Turkish ı is one of the sounds English speakers usually need to practice.

It is:

• not the same as English i
• a back, unrounded vowel
• somewhat like the sound in the second syllable of sofa for some speakers, but not exactly

A rough pronunciation guide:

• yanık ≈ yah-nuk (but with Turkish ı, not a full English u)
• sızlamıyor ≈ suz-lah-muh-yor (again, only approximate)

Also note:

• sızla- has stress earlier in the word
• -yor is pronounced clearly at the end

If you want to sound more natural, mastering ı is very important, because it is a separate vowel in Turkish.