Hello and welcome to HCM
The history that you have given- itching on your neck, back, abdomen and chest along with red bumps and the same problem is acquired by your baby girl and other family members.
This history suggests an infective and communicable disease.
It could be scabies
, as this is a very common cause of itching. It is caused by a mite which burrows between the furrows of skin and causes intense itching.
The treatment has to be given to entire family including your baby.
Treatment consists of application of an ointment twice on whole body.
All clothings that you are using also needs to be disinfected.
Maintaining good hygiene and taking regular bath prevents scabies and many other diseases.
However, for a correct diagnosis you need to consult your doctor.
Thank you and take care
Dr Shailja P Wahal