Symptom adjectives are listed in this post. Each word below can often be found in front of the noun symptom in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing SYMPTOM.
acute, additional, alarming, bad, cardinal, certain, characteristic, chief, classic, clear, clinical, common, constant, dangerous, depressive, diagnostic, different, distressing
dominant, earliest, early, essential, external, fatal, favorable, favourable, first, frequent, further, general, good, grave, greater, hallmark, hopeful, hysterical
important, infallible, initial, key, last, late, latter, leading, least, main, major, marked, mere, morbid, more, negative, neurotic, new
obvious, occasional, ominous, only, other, outward, painful, particular, pathological, peculiar, physical, positive, possible, predominant, premonitory, presenting, primary, principal
prominent, psychiatric, psychotic, related, same, second, secondary, serious, significant, single, slightest, smallest, special, specific, striking, strong, subjective, such
sure, surest, troublesome, typical, unfavorable, unfavourable, unmistakable, unpleasant, unusual, usual, visible, worst
Hope this word list had the adjective used with symptom you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.