Topic summary
Negative Symptoms
Extracted from the Wikipedia article Signs and symptoms.
Positive and negative
Sensory symptoms can also be described as positive symptoms, or as negative symptoms depending on whether the symptom is abnormally present such as tingling or itchiness, or abnormally absent such as loss of smell. The following terms are used for negative symptoms: hypoesthesia is a partial loss of sensitivity to moderate stimuli, such as pressure, touch, warmth, cold; Anesthesia is the complete loss of sensitivity to stronger stimuli, such as pinprick; Hypoalgesia (analgesia) is the loss of sensation to painful stimuli.