* Psychiatric disorders – schizophrenia, severe depression, bipolar disorder, etc. * Psychological disorders – eating disorders, mood disorders, anxiety disorders, etc. * Psychiatric medicines (if taken as prescribed or improperly, overdosed, or mixed with alcohol) * Parkinson's disease
Psychomotor retardation
Autism
Speech delay
Language delay
Puberphonia
Dystonia
Lordosis behavior
Hypophonia