Itchy and whitish penile blood vessels are mostly caused by dermatitis, torticollis or dermatophytosis. 1. Dermatitis: Inflammatory skin disease caused by various reasons, may appear itchy and white. 2. Glans foreskin infection: Inflammation that may be caused by a long foreskin, phimosis, or Candida albicans infection. In addition to the symptoms of whitening and itching, it may be accompanied by localized redness, swelling, erosion and ulceration, and abnormal discharge. 3. Ringworm: mostly due to fungal infections, the external genitalia are also prone to itchy and whitish conditions due to fungal infections, which may be accompanied by symptoms such as scaling. In addition to the above diseases, other urological diseases may also appear penis vascular itchy white and other symptoms, should be timely medical examination, according to the cause of the appropriate treatment.