Try looking up THC chemical name for marijuana instead my friend,

I found this...

"THC acts upon specific sites in the brain, called cannabinoid receptors, kicking off a series of cellular reactions that ultimately lead to the "high" that users experience when they smoke marijuana. Some brain areas have many cannabinoid receptors; others have few or none. The highest density of cannabinoid receptors are found in parts of the brain that influence pleasure, memory, thinking, concentrating, sensory and time perception, and coordinated movement.1

Not surprisingly, marijuana intoxication can cause distorted perceptions, impaired coordination, difficulty with thinking and problem solving, and problems with learning and memory. Research has shown that, in chronic users, marijuana's adverse impact on learning and memory can last for days or weeks after the acute effects of the drug wear off.2 As a result, someone who smokes marijuana every day may be functioning at a suboptimal intellectual level all of the time.

Research into the effects of long-term cannabis use on the structure of the brain has yielded inconsistent results. It may be that the effects are too subtle for reliable detection by current techniques. A similar challenge arises in studies of the effects of chronic marijuana use on brain function. Brain imaging studies in chronic users tend to show some consistent alterations, but their connection to impaired cognitive functioning is far from clear. This uncertainty may stem from confounding factors such as other drug use, residual drug effects, or withdrawal symptoms in long-term chronic users."

Here's the web link for that:

http://www.drugabuse.gov/publication...acts/marijuana

I then looked up the sites in the brain where the cannabinoid receptors, which are the basal ganglia, hippocampus and cerebellum. THC blocks or mimics neurotransmitters in your brain affecting short term memory, coordination, learning and problem solving as well as the side effects of panic attacks, anxiety and paranoia.

I looked up DID and the brain and found the following:

"When a person experiences extreme stress "endogenous, stress-responsive neurohormones, such as cortisol, epinephrine and norepinephrine (NE), vasopressin, oxytocin and endogenous opioids" are released (10). These substances induce glucose release and activate the immune system, enabling the organism to effectively deal with the stress. Chronic stress, however, decreases the effectiveness of this system. It has been hypothesized that when the system is bombarded with chronic stress, there is a malfunction in the negative feedback loop which goes from the neurohormones back to the hypothalamus and pituitary gland. As a result, the system begins operating in positive feedback mode; increased cortisol release, for example, leads to increased cortisol production. The desensitization of the system causes the person to have an intense stress reaction in the presence of even the smallest trigger. Abnormalities in the limbic system have also been implicated in this condition."

Here's the link

http://serendip.brynmawr.edu/exchange/node/1780

So my hypotheses is this.
If marijuana can put you into a panic situation and you have DID and smoking cannabis triggers it that could potentially be why your symptoms are worsened post smoking marijuana.