Various conditions can lead to irritated, red skin. Causes can range from a temporary sensitivity to a chronic skin problem. Common culprits of red skin or red spots include: 1  Dry skin. 2  Sunburn. 3  Rosacea. 4  Acne. 5  Allergic contact dermatitis. 6  Eczema (atopic dermatitis).
Methylene blue is a component of a frequently prescribed urinary analgesic/anti-infective/anti-spasmodic known as Prosed, a combination of drugs which also contains phenyl salicylate, benzoic acid, hyoscyamine sulfate, and methenamine (aka hexamethylenetetramine and not to be confused with 'methanamine').
Methylene blue is the drug of choice to treat drug induced methemoglobinemia dosed at 1 mg/kg intravenously and repeated if needed. 3. Lymph node and vessels delineation. Isosulfan blue: usual dose is 0.5 mL subcutaneously into 3 interdigital spaces of each extremity per study (maximum 3 mL).