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2023年5月2日 · An erection starts in your brain. Something you saw, felt, smelled, heard, or thought makes your nerves send chemical messages to the blood vessels in your penis. The arteries relax and open up to ...
2024年1月23日 · Use WebMD’s Drug Interaction Checker tool to find and identify potentially harmful and unsafe combinations of prescription medications by entering two or more drugs in question.
2020年8月14日 · Find patient medical information for sildenafil oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.
2022年11月12日 · Occipital neuralgia is a condition in which the nerves that run from the top of the spinal cord up through the scalp, called the occipital nerves, are inflamed or injured. You might feel pain in...
2022年5月10日 · The front part (what you see in the mirror) includes: Iris: the colored part. Cornea: a clear dome over the iris. Pupil: the black circular opening in the iris that lets light in. Sclera: the ...
2022年11月12日 · What Is Metatarsalgia? Metatarsalgia is a common overuse injury. The term describes pain and inflammation in the ball of your foot. It’s often thought of as a symptom of other conditions,...
2022年12月3日 · Stridor is a high-pitched sound you make when you breathe through a narrow or partly blocked airway. Air can’t flow through your lungs smoothly, so it’s harder to breathe. Stridor is usually...
