I have turned 30 this year. I have only consumed 2 attempts of PMS in 2017 and 2019. I am left with one attempt but due to age limit I cannot consume it as a normal candidate. However, if I use my valid disability certificate issued by competent body (District assessment board through social security), I can get age relaxation of 10 years.
I have never declared my disability before. I want to ask if declaring disability to avail age relaxation can affect my other employment opportunities through PPSC or not? I am applying on every 16-17 scale job advertised by PPSC on which I am eligible. Should I go ahead and claim age relaxation or should I let this chance go?
I will appreciate your valuable responses.
Thank you.

I would say you should get it issued. Because since you're about to go overage anyway, might as well go for the certificate.
As for it affecting your employment opportunities, it is up to you to produce the certificate and claim disability in your exam form. If you don't claim it then that's the end of it; you're appearing as an average person. I highly doubt they run background checks on disability certificate records. That's what they have their written, psychological and medical tests in place for. Failing the written exam is an intellectual disability vis a vis the job applied for. Same goes for psychological and medical. But failing a written, psychological or medical doesn't bar your future employment prospects. Same for the certificate.
A disability certificate is like a privilege, an extra consideration. If you use it, good. If you don't, your choice.

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Thank you for your response. I have got the answer I was looking for.

I've been reading your posts lately and I'm aware how close you got multiple times in Competitive examinations. Anyhow, you should definitely use it wherever it is deemed necessary. Avail this opportunity, seems like a blessing in disguise to me. Good luck!

Thank you. Yes, I am going to use it. I can give me 10 years age relaxation but my intention is to avail it at the earliest possible chance. I wish, pray and hope that it come as a blessing in disguise for me.