I'm sorry to hear about the itching and acne you're experiencing, especially in the shaving area and on your scalp and body. These symptoms can be uncomfortable and may be caused by irritation, folliculitis (inflammation of hair follicles), or other skin conditions.

For the black spots and itching, a topical treatment like Nadibact Gel might be helpful. Nadibact Gel is a prescription topical gel that can assist in managing skin infections and inflammation, which might be contributing to your symptoms. However, since it requires a prescription, it's important to consult a dermatologist who can evaluate your skin condition properly and prescribe the most appropriate treatment.

In addition to medication, here are some general tips that might help:

• Avoid harsh shaving products or techniques that irritate your skin.
• Use gentle, fragrance-free cleansers and moisturizers.
• Keep the affected areas clean and dry.
• Avoid scratching to prevent further irritation or infection.

Because your symptoms involve multiple areas and include both itching and acne with discoloration, seeing a dermatologist is recommended. They can provide a precise diagnosis and tailor treatment to your specific needs.

If symptoms worsen or you develop signs of infection such as increased redness, swelling, pain, or fever, seek medical attention promptly.To narrow down potential causes, we will need some more information.I understand you're dealing with itching and black spots. Could you please share your age and gender so I can better assist you?