Please consult a gen surgeon physically. For itching, you can take tab cetrizine 5mg one morning and one evening for 7 days Tab ketoconazole 200mg one daily for 10 days. Apply candid b ointment twice daily for 2 weeks.

​"Severe phimosis, where the foreskin cannot be retracted at all, creates a closed environment that is highly prone to Balanoposthitis (inflammation/infection of the glans and foreskin). The intense itching you are experiencing, especially at night, is a classic sign of a fungal infection (Candidiasis) or a bacterial buildup due to trapped moisture and secretions (smegma). At age 20, if this condition is causing significant distress and sleep loss, it requires active medical intervention to prevent secondary complications like urinary tract infections or paraphimosis

Avoid forcefully pulling the skin back, keep the area clean and dry, Since you are describing severe phimosis with inability to retract the foreskin, it is important to consult a urologist for proper evaluation and further treatment.

Need a few more details please consult for further evaluation and treatment

Avoid fried and spicy food Water intake mor3 Do connect and consult

Can help you, kindly consult and provide detailed history for proper diagnosis and further management