"clear symptom" is a correct phrase in written English.
You can use it any time you are discussing an obvious or visible sign of a medical condition. For example, "The patient had a clear symptom of a fever, as his face was flushed."
Girls' subject choices in school are one clear symptom of their unequal experiences.
The tragedy was a clear symptom of the global apparel industry's outsourcing of responsibility for labor and environmental conditions in factories.
"I had not seen that in the team in training or qualification but this is a clear symptom of a team that approaches a competition either feeling inferior or a bit concerned so you make basic errors," he said.
The proportion of wilted plants (clear symptom of Ralstonia infection, which correlates with pathogen density in the rhizosphere and thus with invasion success32) increased with time and the bacterial wilt disease spread fitted well with a logistic regression (Fig. 3; Table 1).
He said that the recent increase in murder rates was a clear symptom of a rise in drug trafficking crimes.
Moreover, it is a clear symptom of a much deeper problem.
Several still show clear symptoms of trauma, say friends.
Clear symptoms of non-slip conditions at the capillary wall, are detected in this low temperature region.
Mutant mice died within 2 weeks of tamoxifen treatment, displaying clear symptoms of ileus paralyticus.
"When you have such clear symptoms of a problem, you act lest you wait until the patient is dead".
More than half of those who test positive are unaware they have the infection because there are often no clear symptoms.
