Hello
Welcome to health care magic.
Itching all over body may be due to a
skin infection called scabies/allergic side effect to medicines,food,chemicals.
Have you been recently under any medications?
Suspecting
allergic reaction,you have oral tablet cetrizine once a day for 3 days.
If you small reddish papular lesions between your finger digits,armpits,elbow,abdomen or groin area,we can suspect scabies.For that you need to visit
dermatologist.Skin scrapping with microscopy is needed to diagnose it.It can be handled by local application of ointment call
benzyl benzoate.
Wash your clothes in warm water.Dont share your belongings with others till it is diagnosed.
Besides,you can go for a test called liver function test for serum
bilirubin levels.Their rise may cause generalized itching.
Hope I answered your query.
If you have more,feel free to ask.