Without it, the diagnosis of PMS cannot be accurately made. The reason for this is that retrospective recall has almost always been found to be markedly different from prospective charting. That mood disorder is where treatment needs to be directed. The doctor will give you a chart to track the severity of some of your symptoms over one or two months. The best treatments are often the simplest.
Dietary change can help dramatically.
A low carbohydrate diet, especially avoiding any simple sugars and only sparingly having complex carbohydrates is beneficial.