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Two most common cause for such cuts in the foreskin and glans are (1) Inadequate lubrication and a (2) Fungal (Candida) infection. Since you had everything normal in the initial months and since you have tried lubricant without any benefit I suspect a Candida infection.
I would like to know where there is any redness over the glans penis ?
Also is there is any history of high risk sexual behaviour ?
Any history of Diabetes or immune suppressing condition ?
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