A symptom is anything of which a patient complains with respect to his or her own body. It may also be obvious to an observer, for example a rash, but it may be entirely Something is subjective when it is felt by the individual. Another person cannot perceive whatever sensation it is. All symptoms are subjective. One person cannot directly experience another individual’s discomfort. There is no means by which we can prove or disprove that somebody is indeed experiencing the symptoms that she or he describes. See also objective., such as a pain somewhere or an emotional feeling.