 [ Symptoms ] what is this large hard dark lump under the skin of my inner thigh it does not hurt but i have had it for like 3 months  there is an oval hard lump under my skin on my inner thigh farther back so you can not see it if i am standing it barely sticks out from my skin but is large like wide and long the skin above its darker than the skin around it pretty sure not dermatofibroma i thoughtfrom shaving or my shorts were too tight &were irritating the skin but i have addressed these &it hasnt goneaway it is too low to be a swollen lymph node should it go away on its own time if i use neosporinor should i visit a dr [ Disease ] hi you should be ok as it will keep working for around 48 hours hope this helps you good luck