What causes cracking of the skin on the penis?

Cracking of the penile skin is commonly caused by excessive friction, balanoposthitis, rough sexual intercourse, or trauma. - If caused by excessive friction, it may result from overly vigorous physical activity leading to abrasion and fissuring of the penile skin. - If due to balanoposthitis, it is likely secondary to bacterial or fungal infection. - If resulting from rough sexual intercourse, it may stem from forceful or aggressive sexual activity. - If trauma-induced, it could be due to accidental laceration by a sharp object.