Very itchy rash under arms and breast, behind knees and ears, inside elbows and in vaginal and anal area. Skin biopsy show eosinophils. What does this Mean? Could this be a food sensitivity?

answered:

Eosinophilic rashes

Rash
A variety of diseases can cause diffused skin rashes with eosinophilic infiltration including those mentioned in previous answers. However it seems like it affects both skin and mucus membrane and it is very diffused. Hypereosinophilic syndrome is a concern. Either an allergist, dermatologist, or hematologist can help you in this case.
Sign Up

Get personalized answers from doctors!

Allergies Anus Arm Biopsy Breast Dermatology Ear Elbow Eosinophil Food allergy

answered:

A number of causes

Arm
Eczema, drug reaction, bug bites, contact dermatitis, some autoimmune skin conditions and others can have an itchy rash and eosinophils on biopsy. Please see your dermatologist for a more definitive diagnosis and treatment.
Sign Up

Get personalized answers from doctors!

Anus Arm Autoimmune Biopsy Breast Contact dermatitis Dermatitis Dermatology Drug reaction Ear

See below

Food_allergy
The presence of alarge number of eosinophis suggests an allergic type reaction-drugs, food , some perfumes preseent in a variety of things all can cause this.
Sign Up

Get personalized answers from doctors!

Anus Arm Biopsy Breast Ear Elbow Eosinophil Food allergy Itching Itchy rash

answered:

Possible

Scarlet_fever
But it seems to be a systemic condition. Check with an allergist or a hematologist.
Sign Up

Get personalized answers from doctors!

Allergies Anus Arm Biopsy Breast Ear Elbow Eosinophil Food allergy Hematology