According to the symptoms you reported, (small pink, itchy and painful bumps behind ear) might be due to a certain type of eczema, called contact dermatitis. Contact dermatitis is a condition in which the skin is inflamed due to contact with certain allergens or irritants.
The rush is localized and affects only the superficial layer of the skin. Once the contact stops it might take up to several days for the rush to disappear.
The pillow that might have been full with dust and irritants might have caused the present condition. Therefore, removing the pillow for several days might be helpful. if the bumps do not disappear or they tend to multiply and to further spread, you might want to see a dermatologist. If the bumps start to show white spots on their tops then you might be experiencing a skin infection and topical or oral antibiotics might be needed, prescribed by a dermatologist. Anyway, it is hard to say what caused the bumps without seeing them, so visiting a medical health care professional is recommended.
DISCLAIMER:
"Ask a Doctor" questions are answered by certified physicians and other medical professionals who volunteer
their time on eHealth Forum.
For more information about experts participating in the "Ask a Doctor" Network, please visit our
medical experts page.
You may also visit our Skin , for moderated patient to patient support and information.
The information provided on eHealth Forum is designed to improve, not replace, the relationship between a patient and his/her own physician.
Personal consultation(s) with a qualified medical professional is the proper means for diagnosing any medical condition.