I am seeing a black spot on my left hand's index finger. The portion of black spot is very hard and I feel numb in this spot. I do not see any side effects. What is the cause of this
The black spot on your index finger, accompanied by hardness and numbness, could be caused by various factors, including a benign growth like a wart or seborrheic keratosis, a skin condition like melanosis or acral lentiginosis, or even a more serious condition like skin cancer, so it's essential to consult a dermatologist for a proper examination, diagnosis, and appropriate treatment.