Can a child be diagnosed with cerebral palsy but not have brain damage visible on CT and mri?

Yes. Mri and ct show only the anatomy of the brain and not how it functions. So although in most cases something is seen on MRI there are cases where the MRI is normal but the child still appears to have cerebral palsy.
Yes. CP is triggered by an injury to the motor cortex,(a defined region of the brain). The injury could be from loss of blood flow, oxygen or infection at any point from when it forms to the 3rd birthday (research definition).Such an injury does not leave a calling card for an MRI or CT.It is not like an adult who fell off the turnip truck & had brain injury.
Unfortunately, yes. Cerebral palsy(cp) can occur with no logical explanation, although prematurity, fetal distress, and birth accidents seem to increase the likelihood. The baby with CP presumably either prenatally, during birth, or soon after delivery received some insult to the brain. Oftentimes the injury is on a microscopic level that can not be detected by ct or MRI studies--but is still just as devastating.

Related Questions

Will there ever be a cure for brain damage/cerebral palsy?

Perhaps. With new techniques in developing stem cells which can regenerate specific tissues. We can only hope. Read more...

Will docs only diagnose cerebral palsy when there are definitive findings on mri? What clinical signs might they use instead?

Cerebral palsy. Doctors have diagnosed cerebral palsy for a great many years before the MRI was invented. There are numerous signs and symptoms of cerebral palsy and your physician can discuss this with you concerning the individual in question. Read more...
Clinical diagnosis. CP is clasically defined as a motor disorder with no effect on cognition. The primary types are spastic diplegia (weakness and spasticity in both legs), spastic hemiplegia (one side of the body), triplegia (three extremities involved), and quadriplegia. An MRI is often helpful when making the diagnosis, but it is not always necessary. A good history and exam is usually sufficient. Read more...
No. doctors will make the diagnosis of cerebral palsy based on clinical signs including spasticity, hyperactive reflexes, limitation of passive movement at joints. An abnormal MRI is not necessary for the diagnosis. Read more...

Wouldn't brain damage show up on eeg, CT or mri?

No. I know it can be very frustrating sometimes, but brain-damaged does not always show up on any of the imaging studies that we have. Usually memory and personality are good traits to follow. Seeing a good neuropsychologist can also help a lot. Please see your regular doctor for follow-up on this. Read more...

Do CT scans and mris reveal any brain damage that would've been caused by a recreational drug?

Generally Not but... There are reports of significant mdma (i.e. Ecstacy) use with documented brain changes seen on mri. Those patients also had significant neurologic symptoms. In general, it is not likely to see major changes with recreational use. But, again this depends on how "recreational" is defined. Please don't do drugs. Read more...
Also. Some drugs, classically cocaine, can present as hemorrhages on ct or mri. Read more...