This study will treat approximately 24 participants who experience cold sores. Patches will be applied to the cold sore for up to ten days, and the symptoms will be measured during daily clinic visits using non-invasive measurement techniques.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
60
Patch containing acyclovir
Patch without acyclovir
proDERM Institute for Applied Dermatological Research GmbH
Hamburg, Germany
Mean Change From Baseline in Blood Flow
Measurement of blood flow was performed using Field Laser Perfusion Imaging (FLPI) technique. Total episode value (TEV) was calculated as the summation of (test region response minus control region response) across all days. Maximum episode value (MEV) was calculated as the maximum of (test region response minus control region response) across all days.
Time frame: Baseline to Day 10
Mean Change From Baseline in Temperature
Lesion thermographic parameters for TEV and MEV were analysed.
Time frame: Baseline to Day 10
Mean Change From Baseline in Color Intensity of Lesions
The redness of the cold sores to be measured and quantified using sophisticated, standardized and reproducible color photography. Parameter represents distance between test and control values according to a\* axis and b\* axis colour intensity values. The values on the scale ranged from -100 (green, lowest intensity) to +100 (red, highest intensity).
Time frame: Baseline to Day 10
Participant Assessment of Patch Comfort and Noticeability at Day 5
Participants reported experience of the patch aesthetics and cold sore noticeability on the cold sore using a 5-point scale ( 1=Strongly Disagree 2=Rather Disagree 3=Neither Agree nor Disagree 4=Mostly Agree 5=Completely Agree) on 9 questions asked to them: 1. Today my sore felt completely protected 2. Today my cold sores interfered with facial movements such as smiling, eating or drinking 3. Today my cold sores interfered with my interaction with other people 4. Today the patch disguised my cold sores 5. Today I was bothered by the appearance of my cold sores 6. Today my patch was easy to apply 7. Today the patch covering my cold sores was bothersome 8. Today the patches stayed in place on my cold sores until I removed them 9. Today the patches were easy to remove from my lip or skin
Time frame: Day 5
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Participant Assessment of Patch Comfort and Noticeability at Day 10
Participants reported experience of the patch aesthetics and cold sore noticeability on the cold sore using a 5-point scale ( 1=Strongly Disagree 2=Rather Disagree 3=Neither Agree nor Disagree 4=Mostly Agree 5=Completely Agree) on 9 questions asked to them: 1. Today my sore felt completely protected 2. Today my cold sores interfered with facial movements such as smiling, eating or drinking 3. Today my cold sores interfered with my interaction with other people 4. Today the patch disguised my cold sores 5. Today I was bothered by the appearance of my cold sores 6. Today my patch was easy to apply 7. Today the patch covering my cold sores was bothersome 8. Today the patches stayed in place on my cold sores until I removed them 9. Today the patches were easy to remove from my lip or skin
Time frame: Day 10
Participant Assessment of Symptom Intensity at Day 5
Cold sore symptoms (pain, burning, itching) assessment was evaluated on a 5-point scale: 1=Never Bothered, 2=Rarely Bothered, 3=Bothered Some of the Time, 4=Bothered Often, 5=Bothered All the Time.
Time frame: Day 5
Participant Assessment of Symptom Intensity at Day 10
Cold sore symptoms (pain, burning, itching) assessment was performed on a 5-point scale: 1=Never Bothered 2=Rarely Bothered 3=Bothered Some of the Time 4=Bothered Often 5=Bothered All the Time.
Time frame: Day 10