Hi there julia
First, dermatology is a visual field
& as such would greatly appreciate a clear digital photograph of the lesion uploaded on this website using the 'upload data' icon.
Should you wish discretion, feel free to use our premier 'ask-a-doctor' feature & directly get in touch with mois or any other dermatologist
From your clinical description, it does appear like a photosensitive skin eruption.
Is there any family history of porphyrias or any other photosensitive disorders or any gentic ailments eg. dry skin
disorders or thyroid
Do you use perfumes/deos etc & note any aggravation wuth the same?
Does moisturising help it? Do you use sun protection?
To my mind, a skin biopsy
is in order & should help clinch the diagnosis. Do go across to a dermatologist nearest to you & am, sure it will all be sorted out!
Cheers & good luck!
Dr Praveen Rodrigues MD
Dermatologist, Cosmetologist, Venereologist
Vikram Hospital, Bangalore,India