So I’ve heard about this “sperm allergy” before but never really knew if it was true. Believe it or not, scientists confirm that not only is it a legitimate allergy—the technical name is “seminal plasma hypersensitivity”—but it’s also really common for women. Stats say that between 20,000 and 40,000 women in the U.S. are allergic to their man’s spunk. About 30 minutes after sex, sufferers may experience hives, swollen eyes, diarrhea, and breathing problems—the same symptoms common to food allergies. What are women suffering from this allergy supposed to do? Become celibate? Subscribe to a “sperm-free” diet? Carry around an epi-pen for sexytime? Not necessarily. Doctors say, aside from using condoms, there may also be a vaccine that can help woman’s body become more tolerant. Good news, I guess? [Glamour]

Right after giving birth to her son, James, new mama Joanne Mackie started finding blisters on her arms and legs. A few days later, she winced whenever anything touched the painful rash and the tiny blisters that had blossomed into painful welts. Joanne was in such agony she could no longer hold her baby and daddy took over. The new mother was stumped, but a trip to the doctor was even more baffling. Joanne was allergic to her baby. The 28-year-old mother suffers from a rare but painful and dangerous skin disease, Pemphigoid Gestationis.