This SharePost is the companion to the last one, 10 Schizophrenia Myths Busted. I consulted with a friend whose wisdom was on-target and I'll refer to him here.

1.The following symptoms lead to a diagnosis of schizophrenia: Two or more "Criteria A" symptoms or bizarre delusions alone or auditory hallucinations alone, along with Criteria B: continuing social and occupational dysfunction as well as Criteria C: symptoms must persist for six months or more.

Here I'll break down the prodromal stage, active stage and residual stage into their corresponding symptoms. Each symptom will fall under a descriptive category.

Onset Symptoms/Prodromal Stage [NS: Negative Symptoms]

Mood "Affect":
Uncontrollable crying; anxious; irritable; flat "blunted" emotional responses [NS]

Physical [Body] Symptoms:
Sleeplessness; agitation; weight loss

Behavior:
Withdrawal; decline in function; no attention to hygiene; odd, peculiar behaviors; lack of motivation (avolition) [NS]; inability to relate to others (Autism) [NS]

Thinking:
Suspicious; superstitious; illogical, odd beliefs; poverty of speech (Alogia) [NS]

Senses:
Acute; illusions; odd sensory experiences.

Negative Symptoms [NS] present in the prodromal stage: (Criteria A)

Acute Symptoms/Active Stage [A: Criteria A Symptoms]

Mood "Affect":
Anxiety, panic; angry outbursts; inappropriate emotional responses; severe emotional blunting [NS]

Physical (Body) Symptoms:
Sleeplessness; A: Catatonic rigidity - bizarre body postures, mutism, negativism; A: Catatonic excitement - pacing, rocking, grimacing

Behavior:
A: Grossly disorganized behavior - Bizarre actions, follows rituals, swearing and shouting mimics others.

Thinking:
A: Delusions - false beliefs; A: Disorganized speech - incoherent, loose associations, "word salad"

Senses:
A: Hallucinations - Voices, visual apparitions; Bizarre interpretations of taste, touch, smell.

Lingering Symptoms/Residual Stage [NS: Negative Symptoms]

Mood "Affect":
Depression, moodiness; anxiety; ambivalence; flat, "blunted" emotional responses [NS]

Physical (Body) Symptoms:
Unusual eating and sleeping patterns; slowed movements; odd posturing

Behavior:
Decline in function; no attention to hygiene; lack of motivation (Avolition) [NS]; Inability to relate to others (Autism) [NS]

Thinking:
Suspicious; superstitious; odd "fixed" beliefs; concentration/memory problems; poverty of speech (Alogia) [NS]

Senses:
Dulled; illusions; odd sensory experiences.

Negative Symptoms present in the residual stage: (Criteria A)

So as you can see there are five descriptive categories under which the symptoms fall: Mood "Affect", physical (body) symptoms, behavior, thinking and senses, and each stage is comprised of symptoms that fall under those categories.

To wrap up: a diagnosis of schizophrenia is made when the following symptoms are present:
Two or more Criteria A symptoms or bizarre delusions alone or auditory hallucinations alone, plus Criteria B: continuing social and occupational dysfunction and Criteria C: symptoms must persist for six months or more. Negative Symptoms present in the prodromal stage are considered Criteria A and Negative Symptoms present in the residual stage also fit Criteria A.