Help for adults...
I can say form my personal experience that dissociation is one of the most troublesome of conditions. Until I learned how to be more embodied, I suffered from moderate dissociation for the first 30 or so years of my life. So when I treat people who are struggling with dissociation, I recognise many of the symptoms they describe.
Dissociation may be physiological/physical, psychological, "energetic" or even spiritual. Or any combination of two or more of these. Dissociation is one of the best demonstrations that the body and mind, the senses and the sense of self, the physiology and the state of consciousness - are a deeply intermeshed continuum.
I have listed a selection of dissociative symptoms below. The type of symptom is not necessarily a good indicator of how easy treatment might be, and is more indicative of how your body is organising itself internally. Although there are several possible pathways, dissociation essentially takes us a small way towards hibernation. Very very few people experience all of these symptoms.
Dissociation is a side effect of "trauma" - but as described elsewhere on this website, trauma is not necessarily caused by an obvious massive event (like being in an explosion or war zone or major car crash). A surprisingly large number of people suffer from a trauma-like condition even though they have not experienced a traumatic event. The dissociated part of the response is the body's attempt to survive by turning inwards and shutting off the lights. This is run by a very primitive part of our neurology - you might say that it has the evolutionary state of a jellyfish! This means that it is very powerful, and runs a lot of the physiology and sensory system, and cannot normally be accessed through the cognitive brain (frontal cortex) or language centres (temporal lobes/hypothalamus).
There are primitive and powerful parts of our senses that could be compared to a personal bodyguard. The bodyguard does not understand context, and so apparently everyday and harmless changes in the environment can trigger an alarm response. The next stage in this response is that the animal body thinks that it is about to be eaten by a lion, and it dissociates. i.e. the body is flooded with natural opiates so that you would not feel yourself being eaten. For most people this would cause a very mild loss of awareness and slight emotional or mental numbness that would normally be unremarkable, to the point of almost being imperceptible. In more extreme situations it can cause many other odd physical symptoms in varying degrees of severity, including.
I have developed and tested a range of techniques over the years which can reduce or even eliminate dissociative symptoms. The exact techniques used and how long treatment may take is so individually variable that it is almost impossible to give general guidance. I suggest that you consider coming for about six sessions - by then, simple dissociations will have reduced, and it should be clear what scale of treatment might be necessary to achieve the changes you want.