###Human: I have a small dark spot on my thigh with anxiety and OCD. Is it melanoma? ###Assistant: Hello.  I have seen the pictures (attachment removed to protect patient identity). No, it is not melanoma. It is a normal nevus (benign). For your confirmation, you can go for an excisional biopsy of the lesion. Histopathology reports will confirm that the lesion is benign or malignant. Do not worry it is normal nevus due to melanosis (increase in melanin pigment).