I'm sorry to hear about the worsening itching, darkening skin, and black lines on your face that are not healing despite treatment. These symptoms could be due to several possible causes, including chronic skin conditions such as eczema, post-inflammatory hyperpigmentation, fungal infections, or other dermatological issues that may require specialized evaluation.

Since you mentioned using various medications without improvement, it is important to have a thorough examination by a dermatologist. They can assess your skin condition accurately, possibly perform tests like skin scrapings or biopsies if needed, and recommend appropriate treatment tailored to your specific diagnosis.

Key points to consider:

• Persistent itching and darkening may indicate an underlying inflammatory or infectious skin disorder.
• Black lines or marks that do not heal could suggest pigment changes or other skin damage.
• Using topical medications without improvement warrants professional evaluation to avoid potential side effects or misdiagnosis.

Please consult a dermatologist promptly to get a precise diagnosis and effective treatment plan. If symptoms worsen or you experience additional issues like pain, swelling, or systemic symptoms, seek urgent medical attention.To narrow down potential causes, we will need some more information.I understand that you have noticed skin darkening with itching that's getting worse, and black lines on your face that aren't healing. To better understand the situation, could you please share your age and gender?