It sounds like you have a recurrent fungal skin infection that improves with itraconazole but needs confirmation and a long-term plan from a dermatologist.

⚕️ Possible diagnosis + explanation

• Dermatophytosis (tinea) — common, often improves with itraconazole and then returns if a reservoir (nails, groin) remains.
• Pityriasis versicolor (Malassezia) — can respond to itraconazole and recur on stopping treatment.
• Chronic tinea with steroid alteration or colonization — rough skin may follow repeated flares or past topical steroid use.

🩺 Importance of proper diagnosis

• Confirm with skin scraping and KOH (potassium hydroxide) test, fungal culture or, if needed, a biopsy; exam should include nails and groin.
• A dermatologist will choose the correct drug, dose and duration and check for contributing factors (topical steroid use, diabetes).

💊 Long-term treatment options

• Targeted systemic therapy: dermatology may prescribe supervised intermittent/maintenance oral antifungal (choice and schedule depend on organism).
• Topical antifungals for localized disease or adjunctive use.
• Treat reservoirs (infected nails or family contacts) and monitor liver function tests (LFTs) if long-term oral antifungals are used.

🩺 When to seek specialist care

• See a dermatologist promptly if you have worsening/spreading rash, nail/scalp involvement, or recurrence despite treatment.
• Stop and seek care if you develop jaundice, unexplained fatigue, or other signs of liver injury while on oral antifungals.

🏥 Lifestyle and skin care tips

• Keep skin dry, wear breathable clothing, wash bedding regularly, and treat/treat contacts.
• Use non-irritating emollients for rough skin and avoid over-the-counter steroid creams unless directed.
• Clean and treat footwear; treat nails if involved.

🩺 Follow-up questions

• Please tell the rash location(s), whether you’ve had nail or scalp involvement, and any prior topical steroid use.

If you want, I can explain maintenance regimens or monitoring tests in more detail.