Experimental Group |
Glycerol |
An extemporaneous preparation of 85% glycerol in water to be applied once daily to lesional skin. |
4 weeks |
85% concentration was selected as our main aim is to test the antimicrobial effect in vivo to confirm in vitro studies on its efficacy (Saegeman et al., 2007). It will be prepared according to pharmacist’s advice, by adding 175ml distilled water to 1000g 99.5% glycerine (El-Gomhouria For Trading Chemicals and Medical Appliances (GOMAC), Egypt) and mixing well without heating till homogeneity is achieved. No additives or preservatives will be added. The preparation will be dispensed in 100ml rations in inert containers. |
15 |
|
Control Group |
Narrow band ultraviolet B |
3 sessions weekly. Initial dosage will start at 70% of the minimal erythema dose and subsequent increments will be adjusted according to erythema response. |
4 weeks including a total of 12 sessions. |
NB-UVB is used as a gold standard for comparison as it is an established treatment for AD (Eichenfield et al., 2014), that also has proven antimicrobial effects (Jekler et al., 1992; Yoshimura et al. 1996; Silva et al. 2006; Dotterud et al. 2008).
It will be delivered 3 sessions weekly by a UV cabin (Waldmann GmbH, Germany) equipped with an integrated UV photometer, having 16 TL-01/ 100W fluorescent lamps producing NB-UVB with a peak emission at 311 nm. The lamps are calibrated every 3 months.
Initial dosage will start at 70% of the minimal erythema dose and subsequent increments will be adjusted according to erythema response. In case of faint erythema, the dose will be fixed. In case of mild erythema, the dose will be decreased to the previous dose. In case of moderate erythema, the sessions will be halted till it resolves and then resumed at 50% of the previous dose. If the moderate erythema is localized, the patient will be instructed to cover it using a cloth during the following session, then gradually expose it for half the exposure time in ensuing sessions.
All children will be closely monitored by their guardians beside the cabin. All patients will be instructed to cover their genitalia and eyes during the sessions using appropriate gear, as per phototherapy unit safety regulations.
Patients who miss 1 or 2 sessions will be allowed to resume at their last dose and the skipped sessions will be recouped so that all patients complete 12 sessions in total. |
15 |
Active-Treatment of Control Group |