The invention provides topical pharmaceutical gel compositions for the treatment of chronic skin damage, specifically for damage caused by neuropathic ulcers and preferably for the treatment of diabetic foot, and in the treatment of vascular ulcers wherein said compositions comprise a combination of Modified Diallyl Disulfide Oxide (M-DDO) (as an antiseptic/antibiotic agent) and 5-methyl-1-phenyl-2(1H)-pyridone.Furthermore, the invention describes methods of treatment, applications and/or pharmaceutical uses in the preparation of medicaments for eliminating, reducing or preventing chronic skin lesions and the damages caused by neuropathic ulcers and particularly in the treatment of diabetic foot and in the treatment of vascular ulcers.