Itching and rash around the anal area, especially worsening at night, can often be due to fungal infections, irritation, or other skin conditions. Since you have itching and pinching without constipation or dietary changes, a common cause could be a fungal infection.

• You might consider using an antifungal cream like one containing clotrimazole, which helps eliminate fungal infections causing itching and rash. However, this should be used only after consulting a dermatologist to confirm the diagnosis and get a proper prescription.
• Keep the area clean and dry, avoid scratching to prevent worsening or secondary infection.
• Wear loose, breathable cotton clothing and avoid irritants like harsh soaps or scented wipes.

If symptoms persist beyond a week, worsen, or you notice bleeding, severe pain, or swelling, please see a dermatologist promptly for evaluation and tailored treatment. If you want, I can explain more about how to care for skin in this area or other possible causes.To narrow down potential causes, we will need some more information.Okay, I understand that you are experiencing rashes and itching around your anal area, mainly at night, and that it sometimes feels like a pinching sensation. I suggest consulting a doctor for proper diagnosis and treatment.