Thanks for the query.
This is limited information to make precise recommendations.The presentation could point towards an infection like scabies which is caused by an itch mite. The best option is to consult a Dermatologist to understand the condition. A thorough evaluation if necessary should be done. Many a times other members of the family also need treatment to prevent relapses and can be best decide by your dermatologist. Hope it helps you.
Next Steps
Scabies should be ruled out.
Health Tips
Avoid Self Medications. Meet a Dermatologist