Hi
This seems to be an sun allergy as the location is over the neck. Please use a sunscreen regularly and use am umbrella when you are out in the sun. Use a moisturiser and an antihistamines tablets. You may need topical steroid creams as well. Please contact a dermatologist who can examine you and prescribe the appropriate skin care products and treatments
Answered2016-01-23 16:12:42
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