Since your itch has lasted for three months, it is considered chronic and requires a medical evaluation to identify the underlying cause, such as eczema, allergies, or systemic issues. For temporary relief, apply an over-the-counter ceramide-based moisturiser twice daily and use a mild 1% hydrocortisone cream on irritated areas for no more than one week. An oral antihistamine like Cetirizine (10 mg daily) can also help reduce itching. Avoid hot showers and harsh soaps. Please consult a dermatologist for a proper diagnosis and a targeted prescription plan.