### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
my daughter woke up with a large red itchy spot on her cheek, it s winter where we live so i ruled out mosquito bite. she is 3 yrs old, she has another red area in her arm pit that itches. she has has the chicken pox vac. all her shots are up to date. im wondering what this could be and if there is a possibility of it being contagious, as I have a compromised immune system, i have to be very careful if its a chance of it being chicken pox i cant risk getting shingles. Or it could be a spider bite maybe? i m not sure

### output:

Hi, Welcome to the ChatDoctorBrief... History is incomplete, some associated symptoms need to be known to differentiate differential diagnosis. Detailed answer... As I have gone through your question, I need to know about other associated symptoms to rule out whether it can be chicken pox, measles , eczema or low immunity. If she has 2 to 3 days back history of runny nose, flu,red eyes or fever then most probably it can be viral infection (measles), as the spots tend to be in clusters and crust gradually in chicken pox, and they appear first on abdomen, in measles spots and rashes start appearing first on face but associated with above-mentioned symptoms. Since you have also mentioned low immunity, witChatDoctorpromised immunity, the child should have history of recurrent different infections or chest infections. From my point of view it seems that she is having eczema only, which is allergic response of skin to cold weather, pollen etc. For that stop using soaps and apply emollients 3 times a day. She may also use defense Chat Doctor. 