Nursing care
Positive vs negative symptoms of schizophrenia: how to sort them and respond
Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated October 2026
Short answer
Positive symptoms are experiences added to normal function: hallucinations, delusions, and disorganised speech or behaviour. Negative symptoms are losses of normal function: flat affect, alogia, avolition, anhedonia and social withdrawal. Positive symptoms usually respond better to antipsychotics, while negative symptoms often drive long-term disability and call for structured, motivational nursing support.
Think added versus taken away
The quickest sorting rule is whether the symptom adds something that should not be there or removes something that should. Hearing a critical voice, believing neighbours are planting cameras, or speaking in jumbled, loosely connected phrases are additions, so they are positive symptoms. Positive here means present, not good.
Negative symptoms are deficits. Affective blunting shows as an immobile face, poor eye contact and little expressiveness. Alogia means poverty of speech. Avolition is reduced drive for goal-directed activity, anhedonia is reduced pleasure and asociality is reduced interest in relationships. A client who stays in bed, neglects hygiene and answers in single words is showing deficits.
Gradual changes in thinking, mood and social functioning often appear before the first psychotic episode. Families may describe a young person who withdrew from friends or struggled at school or work well before anyone heard about voices, which is why early changes deserve attention.
Where disorganisation and cognition fit
Disorganised speech and behaviour, including catatonia, are often grouped with positive symptoms in exam materials, although some references list them as a separate domain. Either way, they are not negative symptoms. Read the answer options carefully, because a question may ask you to pick all deficit features from a mixed list.
Cognitive symptoms, such as problems with attention, memory, processing speed and planning, are a third domain. They overlap with negative symptoms in how they look, for example missed appointments, but stem from impaired thinking rather than reduced drive. Both contribute strongly to how well a person manages work, study and self-care.
What sorting cannot tell you
Some apparent negative symptoms have other causes. Depression, sedation from antipsychotics, drug-induced parkinsonism and social isolation can all look like flat affect or avolition. A client who becomes newly withdrawn after a dose increase needs assessment for adverse effects and low mood, not just a label of negative symptoms.
Positive symptoms also vary in risk. Command hallucinations that instruct harm, and persecutory delusions that lead a person to defend themselves, are safety concerns. The category explains the symptom type but not its urgency; assess content, distress and risk each time.
Nursing approaches matched to each group
For hallucinations, ask what the voices are saying, acknowledge that the experience is real to the client without agreeing with its content, and focus on reality-based activity. For delusions, avoid arguing or reinforcing the belief; respond to the feeling behind it and redirect to concrete topics. Assess for command content and follow safety protocols.
Negative symptoms need patience and structure. Break self-care into small steps, set a simple daily routine, allow extra time for responses and give positive feedback for effort. Expect slow change, because these symptoms respond less to antipsychotics. Psychosocial treatment and coordinated, recovery-oriented care support engagement with daily life and relationships.
Families need help with both groups. Explain that low motivation is part of the illness rather than laziness, and that arguing with delusions rarely helps. Encourage contact with family education and support services, and teach the warning signs of relapse, such as reduced sleep, increasing suspiciousness or stopping medication.
Worked scenario: picking the negative symptom
A hypothetical client with schizophrenia is described as follows: she believes the radio broadcasts her thoughts, she shows little facial expression, she answers with one or two words, and she laughs while describing a sad event. The question asks which finding is a negative symptom. The strongest choices are the limited expression and the minimal speech.
Thought broadcasting is a delusion, so it is positive. Laughing at a sad event is inappropriate affect, a disorganised feature, not flat affect. In practice the nurse documents observed behaviour in plain terms and reports changes to the treatment team rather than relying on one label.
Sources and further reading
MSD Manual Professional: Schizophrenia. Positive, negative, disorganised and cognitive symptom domains with definitions, and weaker antipsychotic response of negative symptoms.
NIMH: Understanding schizophrenia. Psychotic, negative and cognitive symptom groups described in plain language.
NIMH: Schizophrenia health topic. Coordinated specialty care and recovery-oriented treatment supporting school, work and relationships.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our mental health practice questions are the closest set to what this page covers.
Common questions
Does positive mean the symptom is helpful?
No. Positive means added to normal experience, such as hallucinations and delusions. Negative means a loss, such as reduced speech, motivation or emotional expression.
Which symptoms respond better to antipsychotics?
Positive symptoms generally respond better. Negative symptoms and cognitive deficits respond less well and contribute heavily to long-term disability.
How should the nurse respond to a delusion?
Avoid arguing or agreeing. Acknowledge the client's feelings, keep communication reality based, redirect to concrete activity and assess whether the belief creates any safety risk.
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