hello every one , i think this is a strange problem that i ever had in my life and it is causing bad feeling , after i got addicted to coffee i now realised that i got a kind of allergy to caffiene whenever i take only one tea cup or even coke or pepsi i get anxiety irritation and feeling of depression , and inability to concentrate plus darkness around eyes and i feel my eyes get inside my head ,, whenever i take caffiene at night i cant fall a sleep and if i could it is a bad sleep and next day get disrupted ,, i started to take anti histamine and i found out that antihistamin alleviate those symptoms ,, in fact i stopped drinking coffe for 2 weeks but in those 2 wks without coffee i suffered from insomnia and low quality sleep ,, i think am in trouble if anyone could help me and expliain what is happening i would be thankful :(