Waking up at night, screaming with fear, at 2.5 years age, is generally a manifestation of:
Separation anxiety developmentally normal when it begins about 10 months of age and tapers off by 18 months By 3 yr of age, most children can accept the temporary absence of their mother or primary caregiver
Organic illness
Normal development pattern
Castration anxiety
Separation anxiety
Behavioral Disorders in Children