Hello, I have one small sore on my inner thigh, thought it may be a boil, but no puss, been there 3 mnths now, seems unable to completely heal on its own, started as a small smooth red bump, not itchy, not painful, but remains crusty & visible.....folliculitis? Will I need antibiotics, or is it likely to improve over time?...... it has improved, rather than got worse, but won t go away & I usually have no problem skin. Thanks in advance for your advice :-)