Hello
Hydroxyzine will only provide relief in itching as it is antihistamine . 
This measure may be helpful for you . 
Take off the clothes  in bathroom apply permethrine soap all over body , rinse till leathers . 
Now wait for 5 minute , wash with lukewarm water .
Now  clean your whole body with a towel , till completely dry . 
Now apply gammabezene hcl lotion all over body except on the mouth and lips , put on clothes . 
On next morning , take bath with permethrine soap .  put on clothes ( better if washed in boiled water with anti septic solution ) . 
All your apparels like , clothes , bed sheets , towel put into boiled water , boil for 5-10 minutes , dry .
In the evening take bath  with same soap , apply gammabenzne solution same way .
Do it for three consecutive days.
But this treatment should be taken by all family members or if you are in hostel all your room partners .
Take 
ivermectin 12 mg tablet once in a day for three day.
.
This is a complete treatment and must be taken all family members .
Hope this will be useful for you.
This is a prescription treatment ,so please take a prescription form your doctor.