My partner is always getting colds, sinus infections, and other nasties during cold and flu season. I've seen him through strep throat, stomach flu, and 16 months of sinus infection flare-ups. It's important to me to take care of him when he's ill, and I know he appreciates the help, but during the school year I get nervous about the risk to my own health and the potential for missing classes/work. What are some ways (short of wearing a mask...) to keep myself from catching all of his bugs without leaving him sick, sad, and lonely?

I'm wondering about Lyme disease and chronic fatigue syndrome — the differences and similarities?

I am not actually worried but simply curious. When petting with my boyfriend and getting in contact with his sperm, my skin turns slightly red where his cum touches me. Am I allergic, or is there perhaps any other explanation? I am 24 years old and female.

I just found out I tested positive for high-risk HPV. My pap smears have been normal for years. I'm 45 years old and have had lots of basal cell skin cancer. I'm scared to death of getting cancers that are caused by HPV. I'm so stressed. What are the odds that I will actually get cancer, now that I am supposedly high-risk? It appears there it nothing I can do at all to prevent this from happening other than keeping up with my visits and pap smears and hoping I beat the odds. I just wonder at how much risk am I when they say I am HIGH-RISK???

Why is your favorite food very tasteless when you have a cold?

1) This is in reference to your Missed periods Q&A. Another cause of missed or late periods is PCOS (polycystic ovary syndrome). A lot of health care providers don't seem to be aware of this syndrome. In this syndrome, missed or irregular periods are caused by unusual hormone levels, sometimes in combination with insulin intolerance. Because missed and irregular periods cause scar tissue build-up in the uterus (which may cause endometrial cancer) and may cause infertility, it is important that your readers know to ask their health care provider about this syndrome. There are obviously other symptoms and complications, but I just thought that I might mention it to you so that you might read up on it for your readers. Thank you.

2) I was recently diagnosed with polycystic ovary syndrome (PCOS). I'm only 17 and am afraid that this will affect my chance of having children. Should I worry? Also, I know birth control pills will help me regulate my period, but if I take them, will it stop the effects PCOS has on me? Like me gaining rapid weight, missed periods, and losing my hair? This is really worrying me. Can you inform me on this syndrome?

I love sushi, sashimi, and oysters on the half shell. I apparently am uneducated (ignorant) when it comes to the health risks associated with eating raw seafood. I read in an article that a person could contract hepatitis A and worms. Is hepatitis A something that is "curable"? Are ANY of the diseases/problems associated with eating raw fish NOT "curable?"

I have a friend who will be going through chemotherapy and radiation. What can she do to build herself up to keep her body in the best condition possible?

I've come down with chickenpox. Should I stay home from classes even though 90 percent of adults have already had it and are thus immune? If I take great care washing my hands and avoiding coughing anywhere but into the crook of my arm, will I be reasonably assured of not spreading it?