<s>[INST] hi i am male 18 yrs old i use to masturbate once in a weak .this time for a change i masturbate with a cucumber by making hole at the centre .after i masturbate i noticed that there are several scratches in my penis head head.its so painful when i pore water on it.can any one help me.say some natural medicine to cure it.... [/INST] Hi, Thanks for writing in. Looks like there has been small mucosal injury to your glans penis (head of penis). There is nothing to worry as it is due to friction between the inside of cucumber and the head of penis which has made scratches (physical injury). If left alone the mucosal injury in your penis head will repair by itself in 2 - 3 days. If it is bleeding, please consult a doctor and apply Newsprint ointment. Hope this helps. </s>