I don't think you need to worry about having CFS just yet. Severe IBS can make you feel fatigued, of course, and the fact that you have a sore throat and a headache isn't particularly compelling evidence for thinking you have CFS.

I think the most important thing for you to do is massively reduce to the point of almost eliminating, your dark chocolate consumption.

Dark chocolate is full of caffeine and theobromine (a similar, but more toxic stimulant). Stimulants are naturally something you will want to consume if you are fatigued, but the last thing you should be consuming, if you want to recover in the long-term (as you will just become dependent on and resistant to ever-larger doses of stimulant). The stimulants alone would probably be enough to give you a sore throat (through suppressing your immune system) and a headache, as well as by disturbing your sleep. It is true that it has been suggested that dark chocolate helps CFS symptoms in the short term and it is also true that dark chocolate contains many interesting, and potentially helpful chemicals, but I have my doubts as to how this would apply in the long term. It is also worth noting that these people were taking relatively low doses (45g), not getting most of their calories from it. If you were to take dark chocolate therapeutically, which, as I say, I have my doubts about, I would recommend taking small doses infrequently, using it as a medicine, not a food. Chocolate is obviously extremely addictive, which might be a good reason to cut it out completely, if you can't consciously moderate your dose.

In addition to the stimulants chocolate is extremely high in tannins which erode and aggravate the gut. If you have an upset digestive system tannins can temporarily provide some relief, and dark chocolate has been shown to modulate the gut flora, but it will also gradually (or not so gradually) cause stress for the gut (and here I speak from extensive personal experience!). It is therefore, perhaps, the last thing you ought to be eating if you have IBS and are worried about CFS.

It is also misleading to think that chocolate is high in nutrients. Much like healthy wholegrains, it is high in certain vitamins and minerals, but this is significantly undermined by its enormous content of anti-nutrients, such as phytic acid (around 7 times more than bread) and oxalate (about the same oxalate as spinach, otherwise the most oxalate rich common food).

It probably also goes without saying that eating all these stimulants will probably interrupt your sleep. When I had the same problem though, it transpired to be Delayed Sleep Phase Syndrome, which was solved through melatonin, which may help you as well. You might also try a full spectrum bright light (or SAD light) used early during the day, to reset your circadian rhythms, but also, perhaps to make you more awake during the day. More sun, as has been suggested, is also a good idea, both for the light and the vitamin D, which is particularly important for your gut.

Of course, you know what your gut can handle, but I'm surprised you're eating solely carrots. They're very high in pectin, a soluble fibre which one might think would feed your (presumably disordered) gut flora, but experiment and see what works.

Since your fatigue began when you eliminated most of your carbs, adding back in some carbs seems like an obvious thing to try. Given your IBS you will need to be careful what source you pick, but you should be able to find something, even if it's just glucose powder. I don't have IBS, but I still find even potatoes to be very bad for my gut sometimes (more fibrous vegetables and sweet potato even worse).

Hope that helps.

You need more foods for vitamins and minerals, things like veggies, nuts and fruits.

You may not like vegetables, but there are ways to make them tasty. Roast vegetables are yum. A salad can be okay if your throw some bacon and olives in there (or something else tasty), and dress it with olive oil and lemon or lime. A stirfry with some tomatoes, salt and herbs or some other flavouring can be nicer than veges alone too.

Id suggest start with adding those things in: Eat a handful or so of: almonds, walnuts, and macadamias every few days. Eat more vegetables, but find a way to make them taste nice. The odd piece of fruit would also help. You can also make fruit more interesting too: try grilled pinapple with some sweet meat like harm or chicken for example.

If you can't eat fruit, or vegetables, then youll need a multivitamin. Find one that has no iron or iodine, is not high dose, and take it not every day, but every few days (Just because you can get too much of some things, like A, E, K and certain minerals)

But ideally you need more vitamins and minerals via a more varied diet. You body needs a host of different things to run properly. If you dont feed them those things it will stop running properly.

Put your food into the website "cronometer", and youll see that your lacking lots of things, I bet.

You cant hate vegetables and fruit so much youll suffer poor health for it! Look for paleo recipes on google and make your veggies and fruit more enjoyable..

The craving for dark chocolate may be linked to magnesium deficiency. Magnesium malate is good for chronic Fatigue. http://www.ehow.com/about_6529483_magnesium-malate-fibromyalgia.html

You also probably need the carbohydrates. Can you eat root vegetables like sweet potato? And maybe add more good fats to your diet for calories, olive oil, avocado, coconut oil.

Filippo, welcome to paleohacks. Definitely keep reading threads, and search for questions that are relevant to you. There's a lot of good information on here.

As for the fatigue, do you have a doctor you can see about this? The fatigue could very easily be caused by insufficient calories. Teenage boys typically need a ton of calories. If it's not just a matter of needing to eat more, though, I'd strongly suggest you find a doctor that can help you figure out the root of the fatigue.

With your gluten sensitivity, and the high prevalence of celiac disease in Italy, I wonder if you have celiac disease. Either way, it sounds like you're on the right track with the gluten free and dairy free diet. For further gut healing, I'd recommend adding in bone broths and/or gelatin. You might find some relief with the GAPS diet.

Given how limited your diet currently is, I would recommend adding back more foods. Elimination diets are good for a couple months, but it's not a great idea to keep the elimination going longer than you need it. Plus, adding more foods will help you get more calories. Since grains don't sit well with you, try potatoes, sweet potatoes, and other starchy veggies.

For more resources and information, I'd recommend reading chriskresser.com and listening to his podcasts. There's a wealth of information there that I think you might find useful.

-get more carbs! Try sweet potatoes, potatoes, etc. Paleo does NOT have to be low-carb.

-are you getting outside enough? Make sure to get enough time in the sun every day - go walking or just sit outside and soak it in. This will give you Vitamin D (which you can't get enough of from food; you need to get it from the sun or supplements) and might also help your sleeping schedule.

-if you don't like veggies, one way to vary your diet a little is eggs - delicious and full of nutrients.

1. Read this - http://www.westonaprice.org/ask-the-doctor/chronic-fatigue-syndrome

2. Cravings for chocolate indicate that your liver is sluggish. It can only be sluggish because there is a number of toxins it cannot deal with, so you can help your liver by eating raw bitter greens with every meal - like arugula leaves, etc. You have to eat something raw and bitter.

3. Find a very good active probiotic (in your pharmacy refrigerated section) and take it. It is very important for your digestion.

The sure-fire cure for chronic fatigue is more energy. Works every time.