Diagnostic possibilities for this lichenoid hyperpigmented patch are :
1. Contact dermatitis : possible causes are recent use of hair color , use of cosmetic products etc.,
Itching and redness are cardinal features of contact dermatitis
2. Lichen planus pigmentosus : Its an autoimmune disease with lichenoid hyperpigmentation , without any symptom like itching or redness
There are many other skin conditions which are identical to your forehead patch along with above mentioned conditions
It will clear with topical medications .
Next Steps
For accurate diagnosis and treatment consult online or visit dermatology clinic nearby.
Health Tips
Frequent application of moisturizing lotion or cononut oil or vaseline (7 to 8 times a day ) help in both lichen planus and contact dermatitis.