What is the cause of the white color on the tip of my glans? 或者更简洁地表达： Why is the tip of my glans white? 这样的标题更符合外国人习惯的提问方式，且直接、明了地传达了问题的核心。在翻译医学或健

The whitening of the tip of the glans penis may be due to conditions such as balanitis, phimosis, vitiligo, and others.

1. Balanitis: This may be caused by Staphylococcus aureus infection, excessive cleaning of the glans, or a weakened immune system. Symptoms include local itchiness, pain, and increased secretions. In severe cases, it may lead to local skin damage and whitening. Under a doctor's guidance, treatments such as salicylic acid ointment, tacrolimus ointment, and erythromycin ointment can be used.

2. Phimosis: Causes include poor penile hygiene, contact with irritants, and infectious factors. Symptoms include frequent urination, urgent urination, painful urination, and penile itchiness. In severe cases, it may lead to local skin erosion and exudation, resulting in a reduction in melanin and whitening of the glans. Treatment involves following the doctor's advice and taking medications such as roxithromycin capsules, levofloxacin hydrochloride tablets, and cephalosporin capsules.

3. Vitiligo: Causes include genetic factors and abnormal autoimmune factors. It can occur on the face and genital areas, leading to local pigmentation loss and whitening of the glans skin. Following the doctor's advice, depigmentation therapy and laser treatment can improve local pigmentation and restore normal skin color.

Apart from the above conditions, it may also be caused by diseases such as penile cancer, and medical attention should be sought promptly.