Mental disorders are often accompanied by physical symptoms. However, it is of course difficult to determine whether this is the mental disorder causing the symptoms or it usually "co-appearing" together with other conditions. There are many physical conditions that appear more often in people with certain psychological conditions. Here are a few studies you ...
The symptoms you are describing sound like the symptoms of GERD or similar illnesses. Since these can be exacerbated by stress(anger), that may be your answer.
Symptoms of GERD:
But it doesn't have to be this, it could be related to what you are doing while angry:
Shouting, talking or excessive mouth ...
Heroin is a special case of substance addiction, because of the tremendous withdrawal side effects. In general, substance addiction recovery doesn't require a gradual approach. In fact, from what I know about OCD, which has some similarities, I suspect that a gradual approach would be more difficult to succeed with.
Most (proposed) behavioral addictions aren't that well studied (or accepted in the DSM). Gambling is the exception, so you may want to look at how that is treated. Also, there are no accepted standards for what is porn addiction vs. normal use. And since you ask about depression in a different question: increase in porn use can be a symptom of depression or ...
Detoxification (the process by which the body rids itself of a drug)
Medication (for opioid, tobacco, or alcohol addiction)
Evaluation and treatment for co-occurring mental health issues such as depression and anxiety
Long-term follow-up to prevent relapse
A range of care with a tailored treatment program and follow-up options can be ...