मेरी पलक में दर्द है।

Because पलक is a feminine singular noun in Hindi.

The possessive adjective मेरा / मेरी / मेरे changes to match the noun being possessed:

• मेरा = masculine singular
• मेरी = feminine singular
• मेरे = masculine plural, or some oblique/plural uses

Since पलक is feminine singular, you say मेरी पलक = my eyelid.

Here, पलक means eyelid.

So मेरी पलक में दर्द है means something like:

• There is pain in my eyelid
• My eyelid hurts

Be aware that पलक can sometimes appear in poetic or broader expressions involving the eyelids/eyes, but in this sentence the natural meaning is eyelid.

में is the postposition meaning in or inside.

Hindi often expresses pain with the pattern:

[body part] + में + दर्द है

So:

• सिर में दर्द है = There is pain in the head / I have a headache
• पैर में दर्द है = There is pain in the leg
• मेरी पलक में दर्द है = There is pain in my eyelid

English often says My eyelid hurts, but Hindi commonly uses this in + pain structure.

Because Hindi often expresses this idea with a noun + होना structure.

• दर्द = pain
• है = is

So दर्द है literally means there is pain.

That is a very common Hindi way to talk about aches and pain. Instead of directly saying it hurts, Hindi often says there is pain in...

So the literal structure is:

मेरी पलक में दर्द है
= In my eyelid, there is pain

Natural English translation: My eyelid hurts.

Yes, it is understandable and natural enough, especially in a medical or descriptive context.

But depending on the situation, speakers might also say:

• मेरी पलक दुख रही है। = My eyelid is hurting.
• मेरी पलक में दर्द हो रहा है। = My eyelid is hurting / There is pain in my eyelid.
• मेरी पलक में दर्द है। = There is pain in my eyelid.

A small nuance:

• दर्द है can sound a bit more like a general statement of pain.
• दर्द हो रहा है or दुख रही है can sound more immediate or ongoing.

Because Hindi usually does not need मुझे here.

The sentence already tells you whose eyelid it is:

• मेरी पलक = my eyelid

So adding मुझे would usually sound unnecessary or heavy in a simple sentence.

The normal pattern is just:

मेरी पलक में दर्द है।

Similarly:

• मेरे सिर में दर्द है। = I have a headache.
• मेरी पीठ में दर्द है। = My back hurts.

Hindi often identifies the sufferer through the possessed body part rather than by adding to me.

The word order is very typical for Hindi:

मेरी पलक में दर्द है
= my eyelid in pain is

Broken down:

• मेरी = my
• पलक = eyelid
• में = in
• दर्द = pain
• है = is

So the structure is:

[possessed body part] + में + दर्द + है

Hindi usually puts the verb at the end, which is why है comes last.

Yes, but that changes the meaning to pain in the eyelids (plural).

• पलक = eyelid
• पलकों में = in the eyelids

Because में is a postposition, the noun changes into its oblique plural form:

• direct plural: पलकें
• oblique plural before में: पलकों

So:

• मेरी pलक में दर्द है = My eyelid hurts.
• मेरी पलकों में दर्द है = My eyelids hurt.

Note that with पलकों, the possessive would usually also match the plural feminine noun:

• मेरी पलकों में दर्द है is commonly heard
• in many teaching contexts, learners focus mainly on the noun change पलकें → पलकों before में

Both can describe pain, but they are built differently.

1. दर्द है
   • दर्द is a noun: pain
   • very common for aches and pain
   • literal sense: there is pain

Example:

• मेरी पलक में दर्द है।

2. दुख रहा है / दुख रही है
   • from the verb दुखना = to ache, to hurt
   • agrees with the thing that hurts

Because पलक is feminine, you would say:

• मेरी पलक दुख रही है।

So:

• मेरी पलक में दर्द है। = There is pain in my eyelid.
• मेरी पलक दुख रही है। = My eyelid is aching/hurting.

Both are useful; दर्द है is often easier for beginners to recognize because it follows a very common pattern.

Because the main noun here is दर्द, which is being treated as singular: pain.

So you say:

• दर्द है = there is pain

You would use हैं if the subject were plural.

For example:

• मेरी आँखों में दर्द है। = There is pain in my eyes.
• Still है, because दर्द is singular.

So even if the body part is plural, the sentence often still uses है because the thing being asserted is pain, treated as a singular mass noun.

Not exactly.

• पलक = eyelid
• आँख = eye

So if you want to say my eye hurts, you would normally say:

• मेरी आँख में दर्द है।

If you say मेरी पलक में दर्द है, you are specifically talking about the eyelid, not the whole eye.