Pinpointing the exact source of this symptom requires a physical exam and diagnostic tests. But when feet feel cold but are not cold to the touch, a possible cause is a neurologic problem, such as peripheral neuropathy. Of course, feet can get cold for many reasons. The most obvious is a cold environment, along with a lack of proper shoes or socks. Viral infections similar to those that cause a cold Vocal strain, caused by yelling or overusing your voice Bacterial infections, such as diphtheria, although this is rare, in large part due to increasing rates of vaccination Chronic laryngitis Laryngitis that lasts longer than three weeks is known as chronic laryngitis. Over-the-counter cold remedies aren't off-limits if you have high blood pressure, but it's important to make careful choices. Among over-the-counter cold remedies, decongestants cause the most concern for people who have high blood pressure. Decongestants relieve nasal stuffiness by narrowing blood vessels and reducing swelling in the nose. 这里有个老外专门讲发音、听力的 COLD vs CODE, WILD vs WIDE_腾讯视频 发现上面这个视频广告时间太长，自己做了个听音入脑的， Cold 和 Code 发音区别 听音入脑_哔哩哔哩_bilibili 听多了自己就听出来了，code是"扣的"，cold前边有点像"括"的前边，合起来有点像"括欧的"。
