Most probably you are having an allergic reaction to some bites ,probably mosquito or any other inscects that can get to your bed.. Treatment is dependant upon the type and severity of the reaction but may involve Calamine lotion - for local application... Antihistamines - May minimise itching and decrease response in mild to moderate reactions, especially with primarily skin involvement Oral steroids - used in short courses for moderate allergic reactions especially with asthma symptoms or skin conditions If the itching is increasing and more eruptions are appearing you should report to local hospital because you can have anaphylaxis.. Anaphylaxis is a severe life threatening allergic response that may occur following an insect sting.