The symptoms can be due to:
1. Atopic dermatitis
3. Parasitic infestation like scabies
4. Systemic involvement like Liver disease
5. Allergic reactions
So, kindly consult a Dermatologist
& get a proper clinical examination done.
Investigations like complete blood count
& Liver function test will be helpful.
Symptomatic relief can be obtained by intake of anti histamine
preparations like Allegra