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ILL-defined symptom complex

Symptoms referable to nutrition


Abnormal weight gain or loss, loss of appetite.

Symptoms referable to the circulatory system


palpitations, murmurs.


Symptoms referable to the respiratory system


Dyspnes, stridor, cough.

Symptoms referable to the digestive system


Dyspepsia, constipation, diarrhea, hemorrhage of rectum and anus, gastrointestinal hemorrhage, nausea and vomiting, abdominal pain, ascites, abnormal stool contents.

Symptoms referable to the genitourinary system


Renal colic, dysuria, incontinence.

Symptoms referable to be musculoskeletal system


Pain in joint, stiffness of joint, pain in limb.

Symptoms referable to the central nervous system


Reye syndrome, migraine, convulsions, headache.

Ill-defined presentations


Lymphadenitis, psychalgia, syncope and collapse, dizziness/giddiness, sleep disturbances, pyrexia of unknown origin, malaise and fatigue, localized swelling, mass, lump, rash, edema, pallor, lack of normal physiological development, septic shock, enlarged lymph nodes, chest pain, abdominal mass, signs and symptoms in the breast, allergy, ataxia.

Ill-defined causes of morbidity


Malignant neoplasm, unspecified site.
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