<s>[INST] hi im a 32 year old male and have recently noticed white stuff under my foreskin and is a little smelly. I do tend to itch alot and im worried because im wanting to start a family this year and with this condition im finding it hard to tell my wife and put off having sexual intercourse. Please can you help [/INST] Hello, The Yellowish/whitish substance is called Sega.  Sega is a combination of shed skin cells, skin oils, urine, sperm cells and moisture.  It occurs in both male and female genital organs. In females, it collects around the clitoris and in males, Sega can collect under the foreskin.  There is no evidence that Sega causes penile cancer, but its presence over a long period of time may irritate and inflame the penis, which may increase the risk of cancer.  It may also make it harder to see very early cancers. Clean the area beneath your foreskin daily twice after pulling your foreskin back.  Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor.  V. Anand, Psychologist </s>