My boyfriends genitals (mostly his penis) have black patches of rising skin on them. What is the cause?

They smell like sweat, and if you scratch the black patches with you finger nail they start to flake off, and they sound dry/crunchy.

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He should go to the doctor and get that checked out.

And you might want to stop doing stuff with him and his dry/crunch genitals.

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I don't know what this might be but if it was me I'd be at a doctors office finding out. Also if I was you I wouldn't be doing anything with that until it's taken care of.

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Have him go get it checked out!And stop sniffing his privates!

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EWWWWW…..go to a doctor! I hope you weren't the one who sniffed his genitals!

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I dunno but like everything….everything always gets better with kisses and love

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That is definitely not normal. Don't have sex with him until he goes to a doctor and finds out what this is. Could be some kind of fungus - he needs to see a doctor. Guys can go to Planned Parenthood for std tests and health care also - on a sliding fee scale.

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Tell him to get a circumcision. That's why Muslims & Jews have it done.

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OMG. Get to a hosptial. NOW. What are you waiting for?!?!?!? Dry/crunchy should never be the case when you are talking about a penis. Oh my. Raised black patches, scrape them off…I hope you are washing your hands after this. As a matter of fact, you need to see a doc too, because before long you are going to be asking a question in women's health about the same symptoms in your vagina. The cause is an std of some sort and it sounds like some type of warts!!!

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I guess you both need to see a doc and quickly !!!

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Wow. I don't think i can give an accurate answer for this one but my best bet is to see a doctor right away. Try not to scratch it off, you could be causing more harm then good.

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It sounds more like a secondary lesion - probably what is called a scale.

Scales are a dry build-up of dead skin cells that often flakes off the surface of the skin. Diseases that cause scale include fungal infections and psoriasis.

Most of the answers here suggest you see a doctor. I would have to agree. If it is a fungal infection, they can be infectious. Keep the area clean and dry at all times. Try using some type of medicated powder.