### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
For the past month I have severe itching at night, all over my body and head, (no rash). It gets so bad that i have taken benedryl almost every night. It used to just happen only when I was in our den for more than 1/2 hour or when I ate anything with soy lethicin (commonly found in most chocolates). Also itch if I used soap products like Tide. So I stick with the same skin, hair, makeup and cloths washing products. I have recently started taking Solostar Lantus(15u) at night. I have known allergies to dust mites, cinnamon and soy lecithin. I have changed from a feather to a foam pillow. I itch whether I sleep in my own bed or on the sofa.

### output:

Dear Madam, From what you described, you have allergies often which cause itches. However, it would be good to rule out causes of itches especially given the fact that this particular itches as you said have been a problem since a month now and at night. Accumulation of certain substances in the body due to their not being able to be excreted can also cause such itches. This is common when the gall bladder which uses bile to excrete toxins from the body has some issues. So kindly see a physician for lab test especially for the gall bladder to rule out other causes other than allergies. Check to see if something AHS changed too in your diet or bed or what you use to ensure It's not simply some allergy. However, it would be good to see a physician to rule out some other cause such as gall bladder malfunction. Hope this helps. Quick recovery and regards, Chat Doctor. 