<human>: when i scratch my skin a rash appears that is really itchy. Mostly on my upper back, lower neck and upper chest. it is in these areas that it feels like a sunburn but it is not sunburn. It seems that scratching or touching skin irritates it and rash appears.
<bot>: Hello. Thank you for asking at Chat Doctor. I went through your history and would like to make suggestions for you as follows:1. I would like to know some details about you like - What is your age? Do you have sweat a lot? Does rash worsen in sunlight? Etc.2. From your given history, I would suggest you to take a multivitamin especially containing vitamin B complex (including Niacin) for 2-3 months.3. I would suggest you to apply a moisturizer/lotion like calamine over the itchy area regularly and take an antihistamine like cetirizine or levocetirizine for symptoms.  Hope above suggestions will be helpful to you. Should you have any further query, please feel free to ask at Chat Doctor. Wish you the best of the health. Thank you & Regards.