اذا وجع ظهرك ما راح، لازم تشوف دكتور.

It means if.

In Levantine, إذا is usually pronounced iza. It introduces a real or possible condition, so here it sets up the if part of the sentence.

وجع ظهرك is a noun phrase meaning your back pain or literally the pain of your back.

A few useful points:

• وجع here is a noun, meaning pain or ache
• ظهرك means your back
• Together they form what Arabic grammar calls an iḍāfa or construct phrase

So the structure is:

• وجع = pain
• ظهرك = your back
• وجع ظهرك = your back pain

That is why there is no separate word for of.

Because in an iḍāfa structure, the first noun usually does not take الـ.

So you get:

• وجع ظهرك = the pain of your back / your back pain

Even without الـ on وجع, the whole phrase can still be definite because ظهرك is definite.

Arabic often adds possessive endings directly onto nouns.

Here:

• ظهر = back
• -ك = your

So:

• ظهرك = your back

This is very common in Arabic. Instead of saying your + noun as two separate words, Arabic often uses a suffix.

Here, ما راح means didn’t go or more naturally hasn’t gone away / doesn’t go away.

With pain or symptoms, راح can mean go away.

So:

• وجع ظهرك ما راح = your back pain didn’t go away / hasn’t gone away

This is not the future marker here.

A useful clue:

• If راح / رح is a future marker, it is normally followed by another verb
• Here, راح is the main verb itself

So this is the ordinary verb to go, not will.

Because Arabic and English do not always match tense-for-tense.

In Levantine, especially in condition sentences with إذا, speakers often use a form that is literally closer to hasn’t gone away or didn’t go away, while English may prefer doesn’t go away.

So the idea is:

• إذا وجع ظهرك ما راح
  = if your back pain doesn’t go away or = if your back pain hasn’t gone away

The important meaning is that the pain is still there.

لازم means something like necessary, and in everyday English it can correspond to:

• must
• have to
• need to
• should

The exact English choice depends on tone and context.

In this sentence, you should see a doctor or you need to see a doctor both fit well.

In Levantine, after words like لازم, the verb often appears without the بـ prefix.

So:

• لازم تشوف = you need to see
• not usually لازم بتشوف

The بـ prefix is common in ordinary present-tense statements, but after modal or necessity words like لازم, it is normally dropped.

Because دكتور here means a doctor, not the doctor.

So:

• تشوف دكتور = see a doctor
• تشوف الدكتور = see the doctor (a specific doctor already known)

Arabic often leaves indefinite nouns bare like this, with no article.

Yes. It is very natural.

Just like in English, see can mean consult or visit a doctor.

So تشوف دكتور is a normal colloquial way to say see a doctor.

Other possible expressions exist, such as:

• تروح عند دكتور = go to a doctor
• تراجع دكتور = consult a doctor (more formal/regional)

But تشوف دكتور is completely natural.

As written, لازم تشوف دكتور is most naturally addressed to one male.

For one female, you would usually say:

• اذا وجع ظهرك ما راح، لازم تشوفي دكتور.

A small extra detail:

• ظهرك is written the same way for masculine and feminine in normal spelling
• but the pronunciation of the your ending changes

So the main visible change in writing here is usually تشوف → تشوفي.

Yes, that is also possible and natural.

Compare:

• إذا وجع ظهرك ما راح
• إذا ما راح وجع ظهرك

Both mean basically the same thing.

The difference is mostly about word order and focus:

• إذا وجع ظهرك ما راح starts with your back pain
• إذا ما راح وجع ظهرك starts with didn’t go away

So the meaning stays the same, but the emphasis shifts slightly.