This is a prospective (look forward using periodic observations collected predominantly following patient enrollment), multicenter, observational study (a type of study in which participants are observed or certain outcomes are measured). This study will consist of 6-week observational period during which data will be collected for participants who are hospitalized due to schizophrenia exacerbation and are receiving treatment with paliperidone palmitate (treatment initiated within 3 weeks after admission to hospital). The participant satisfaction will be evaluated at week 6 (or early discontinuation). Safety evaluations will include body weight, extrapyramidal symptom (eg, inability to initiate movement and inability to remain motionless) rating scale scores, concomitant therapy and assessment of adverse events.