Hi Thank you for asking HCM. I have gone through your query. Your problem can be most likely due to bug bites. Check your bed for bed bugs or its excreta. Usually bed bug bites will come in clusters. Another possibility is scabies. In such case there will be pores in the rashes and it will spread also. If you send a picture it will be more helpful to identify. Local calamine lotion application and over the counter antihistamine like benadryl will be helpful. If no improvement then better approach a dermatologist to rule out the condition and to manage it. Hope this may help you. Let me know if anything not clear. Thanks.