When it comes to terms that describe a medical illness it is not good to use words such as:

discomfort, afflictions, ailment, disorders, complaints and trouble

A better way to describe it would be saying they're or you're unwell or have a medical illness. This way you dont divulge any medical confidentiality.

Its probably best to sayunwell and if people ask "Whats wrong?", clarify with its a medical illness.

If confidentiality isn't relevant simply use painful disease.

When it comes to terms that describe a medical illness it is not good to use words such as:

discomfort, ailment, disorders, complaints and trouble

Affliction is OK. In my humble opinion a better way to describe it would be saying they're or you're unwell or have a medical illness. This way you dont divulge any medical confidentiality.

Its probably best to sayunwell and if people ask "Whats wrong?", clarify with its a medical illness.

If confidentiality isn't relevant simply use painful disease.