Hello,
Without examination it is very difficult to confirm a diagnosis,but it sounds like
eczema or contact dermatitis.Eczema is a form
of chronic dermatitis (rash).Allergic reaction is one
of the important causes of eczema. Allergic reaction can occur to strong soaps, Solvents, chemicals, certain foods, food additives, plants, metals, cosmetics, even urine and faeces of some animals (dust mites).
Wash the areas several times with fresh water. Do not use any cosmetic products at the sites.