Complaining of is the expression used to describe a person's symptoms or issues. However, if you want to avoid using the same phrase repeatedly, you can use synonyms that mean the same thing. Some of the synonyms for complaining of are reporting, stating, describing, and sharing. Additionally, if you want to use a stronger word, you can use terms such as protesting, objecting, or grumbling. In any case, using synonyms can add variety to your language and make your writing more interesting. Furthermore, carefully selecting the right term can help you to convey your message and meaning more precisely.