Dark Yellow Discoloration and Red Spots on the Glans - Urology

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Glans issues


What could cause the sides of the glans to appear dark yellow? Is it normal to have a slightly dark red spot in the coronal sulcus area?

Niming, 20~29 year old female. Ask Date: 2016/10/23

Dr. Sun Hongshun reply Urology


Hello: The description is not very clear, making it difficult to determine a diagnosis.
It is recommended to consult directly with a urology outpatient clinic.
Wishing you good health.

Reply Date: 2016/10/23

More Info


The appearance of dark yellow discoloration and red spots on the glans (the head of the penis) can be concerning for many individuals. Understanding the potential causes and implications of these changes is essential for maintaining sexual health and overall well-being.

Firstly, the glans is a sensitive area of the male anatomy, and its coloration can be influenced by various factors, including blood flow, skin conditions, and hygiene practices. Dark yellow discoloration may be attributed to several benign causes, such as:
1. Natural Variations: The skin on the glans can vary in color from person to person. Some individuals may naturally have a darker pigmentation in this area, which can appear yellowish.

2. Smegma Accumulation: Smegma is a combination of dead skin cells, oils, and moisture that can accumulate under the foreskin or around the glans in uncircumcised men. If not cleaned regularly, it can lead to discoloration and an unpleasant odor.

3. Irritation or Friction: Activities such as vigorous sexual activity or masturbation can cause temporary discoloration due to irritation or increased blood flow to the area.

4. Infections: Certain infections, such as sexually transmitted infections (STIs), can cause changes in coloration. For example, a yeast infection might lead to redness and discoloration, while other STIs may present with additional symptoms like discharge or pain.

The presence of a dark red spot in the sulcus (the groove between the glans and the shaft) could also have various explanations:
1. Folliculitis: This is an inflammation of the hair follicles that can occur in the genital area, leading to red bumps or spots.

2. Pearly Penile Papules: These are small, harmless bumps that can appear around the glans and are often mistaken for abnormalities. They are a normal anatomical variant and do not require treatment.

3. Infection or Inflammation: Similar to the discoloration, a red spot could indicate an infection or inflammation, which may require medical evaluation.

4. Allergic Reactions: Contact dermatitis from soaps, lotions, or condoms can lead to localized redness and irritation.

If you notice persistent discoloration or spots, or if you experience additional symptoms such as pain, itching, or unusual discharge, it is crucial to consult a healthcare professional. A urologist or dermatologist can perform a thorough examination and may recommend tests to determine the underlying cause.

In summary, while some discoloration and spots on the glans can be normal or benign, it is essential to monitor any changes and seek medical advice if you have concerns. Maintaining good hygiene, practicing safe sex, and being aware of your body can help prevent potential issues and ensure your sexual health remains optimal.

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