It sounds like you are experiencing a recurring itchy skin condition with new blistering and swelling after using certain medications, which suggests a possible allergic or adverse reaction.

🩺 Symptoms and Concerns

• Itching on multiple body areas including private parts, with swelling and water-filled blisters near nails after medication use.
• Stopping the medicines led to return of itching, indicating the initial treatment may have caused side effects or was insufficient.

⚕️ Likely Condition and Considerations

• The blisters and swelling near nails could be a drug-induced reaction or a secondary skin infection.
• Your initial medicines included Betnesol (a steroid), which can reduce inflammation but may cause side effects like skin reactions or infections.
• The recurrence of itching suggests the underlying cause (such as eczema, dermatitis, or fungal infection) needs reassessment.

🏥 Recommended Next Steps

• Stop any medications that caused blistering and swelling until evaluated by a dermatologist.
• Consult a dermatologist promptly for a thorough skin examination and possibly skin swab or biopsy to identify infection or allergic cause.
• Treatment may include safer anti-itch creams, antihistamines, or specific antifungal/antibacterial medicines based on diagnosis.
• Avoid scratching to prevent worsening or secondary infection.
• Maintain good skin hygiene and use mild, fragrance-free soaps and moisturizers.

⚠️ When to Seek Urgent Care

• If swelling worsens rapidly or spreads.
• If you develop fever, severe pain, or pus from blisters.
• If breathing difficulty or widespread rash occurs.

Seeing a dermatologist is important to get a tailored treatment plan and avoid further complications. If symptoms worsen suddenly, seek emergency care immediately.To narrow down potential causes, we will need some more information.I understand you're dealing with itching and some reactions to medications. To give you the best advice, could you please tell me your age and gender?