Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that itching sensation throughout the body along with itching over the scalp and worsening of the itching at night can be due to causes like
Allergic reaction caused due to any food or medicine..It can also be due to
Contact Dermatitis caused due to any skin cosmetic, detergent, soap, perfumes, poison ivy etc..
I would suggest you to consult an Allergist and get evaluated and a thorough clinical evaluation and investigations like allergic tests like
Patch test, RAST test, food challenge test etc can help in diagnosis and treatment can be done accordingly..
As of now you can take anti-allergics like Levocetrizine or
benadryl..
Apply calamine lotion..
Do cool compresses..
Once the cause is diagnosed avoiding exposure to the same can help..
You can also be Instilled an
Immunotherapy for reducing severity and frequency of allergic reaction..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.