I'm here to offload I'm afraid, after a super stressy and dramatic morning. My daughter is 23, mildly Aspergers, and with a long history of extreme highs, lows and over reactions. This morning she lost the plot more than probably ever before, literally turning her room upside down, screaming, hitting herself repeatedly in the face with both hands, while attacking me verbally and even threatening to kill herself.

Deep down, I do not believe that she is mentally ill in any way, in fact I would bet everything that she has eaten chocolate in the last 48 hours, and possibly a fair bit of it.

My sister and I, both in our 40's, gave up chocolate at least 15 years ago, and literally never touch it, because it makes us angry, and my daughter knows this. I've warned her about it many times, and the last time she lost her temper in an alarming way (at a security guard in the jobcentre of all places) it turned out that she'd eaten choc the 2 preceding days and she then swore off it herself.

I wish she was a little kid that I could dunk in an Epsom bath, and feed a strict elim diet.

As for the why, I would put the blame fair and square on phenylethylamine. It's the only amine found in chocolate, and so far, the only amine that makes me, my sis and daughter lose the plot in this kind of way. And the amine quantity is also much higher in choc than in other things. I am mid-way through my amine trial at present, but it's a strictly tuna/meat/bananas type of trial - chocolate is literally a safety issue in our family - specially as my daughter is now car driving age.

Because my sis and I have such a definite reaction to chocolate, I would actually be very scared of my girl approaching standard mental health services, and ending up either wrongly diagnosed with something terrible, which would make her feel even more 'like a freak' (being 'the autistic girl' has already made her feel that way to some extent through childhood) or being put on mind altering medication which could potentially cause massive, longer term damage to her mind and emotional coping capabilities. I'm hoping within a couple of days that we'll be able to discuss this properly.

Chocolate has a very dark side for some of us. I honestly think that there are thousands of violent crimes carried out every day in the world, purely due to people eating the wrong stuff for them.

Later

She came home last night full of apologies and tears, and willing to admit that she's had chocolate over the weekend. I'm hoping she can see now that losing all control over your emotions and risking physical injury and worse, is not a fair swap for having a flavour in your mouth for a few minutes  – Kathy from UK.