The phrase "visible symptoms" refers to physical signs or changes in the body that can be seen or observed by others.
Sentences with «visible symptoms»
But I had visible symptoms of something being wrong and I was just told to lose more weight. (nowloss.com)
As the condition develops over time and remains sub clinical (without visible symptoms), it is therefore termed as the «end stage» of a feline urinary health issue. (cat-health-guide.org)
Many times a brain injury does not cause visible symptoms until weeks, months or years after an injury or accident has occurred. (bestattorney.com)