Just to share my experiences with ‘lumps down there’.
I had a lump where the top of your thigh meets the side of the scrotum, right in the crevice. It came and went on 2 week on/2 week off cycles.
It started as a lump then seemed to elongate before going.
Riding the bike made it worse or made it reappear after I thought it had cleared up. I lived with it for a few months then during one spell I couldn’t sit down, so went to the doctors. He diagnosed a ‘fungal’ infection and prescribed thrush cream!! It disappeared after 2 weeks as normal so went for a bike ride and it flared up the day after. Back to doctors, this time it was a bacterial infection so was given penicillin. Again went after 2 weeks, but I kept of the bike and it came back within 2 weeks.
Back to doctors and he was honest enough to say he didn’t know what to do. He gave me some steroid cream, which I googled and it said don’t use to reduce swelling without something to tackle the cause of swelling, but what the hell surely doctors know best. Disappeared after 2 weeks then came back, as sore as ever, without me having been on the bike.
Back to doctors but my usual GP was on holiday so took pot luck. Now it is a lump not a skin infection and I got referred to a ‘lumps and bumps’ clinic. As soon as consultant saw it she diagnosed an ‘infected sinus’ and would take it out, but couldn’t operate immediately as it was infected. Prescribed antibiotics.
[Also said that one thing that shouldn’t have been used was the steroid cream!!]
Now there is another long story on how the surgeon changed from the one who saw me initially to the one who stood over me with a knife [local anaesthetic] and had different ideas of the problem as the lump had almost gone after the antibiotics [he wanted, in his words to ‘put a camera up my back passage’], but I’ll skip that adventure.
Anyway he went in and took out what he thought were infected sebaceous cysts. 6 stitches.
I got the lab results from my GP and was told they were epidermal cysts that had become infected and haemorrhaged with the infection travelling along sinuses . The fact that they had become infected and it had travelled made the surgery harder as instead of ‘popping’ the cyst out they had to guess how much extra tissue to take out and can’t be sure they got it all so it may came back.
The doctor said that there is a lot of bacteria, etc in this area and the rubbing seen during cycling can accelerate or promote it getting into the skin.
I tried cycling a month after the op but was sore after half an hour so left it another couple of weeks, it was better then, but it was many months before that side stopped feeling ‘different’ when I cycled. Good news is that it’s not come back.
Hope my experiences help, maybe help to know what questions to ask.