These medications target specific causes: itraconazole treats fungal infections, cephalexin fights bacterial infections, and levocetirizine helps control itching. Since your rash hasn't improved, the root cause is likely not bacterial or fungal. It may be an inflammatory, allergic, or systemic condition that these specific drugs cannot cure.Please consult a dermatologist for an accurate diagnosis. Depending on their findings, alternative treatments might include topical corticosteroids (like hydrocortisone) to reduce inflammation, or specific immunomodulators, rather than antibiotics or antifungals. Please do not start new medications without a professional evaluation.