hi You had a pyoderma initially on which you have developed irritant dermatitis due to use of dettol... Dettol is an antiseptic agent which is good to use for infected skin lesions but it should always be used in dilution...You should have diluted it with some water and then applied,,,also bandaging of the lesion left concentrated dettol in contact with the skin for prolonged period leading to development of irritant dermatitis. I would advise you to use lukewarm water to clean the area regularly twice a day followed by application of a topical antibiotic cream containing mupirocin..And take oral antihistamine like levocetrizine once a day to reduce the allergic component... Also do not use any moisturising creams/lotion/oils over the affected region Hope it helps Dr Geetika Paul