21. Skin color changes
Skin changes can be indicative of someone’s health. In some cases, they can be a symptom of an internal disease. The most common change, yellowing of the skin (jaundice), may be a sign of liver disease as the liver gets rid of bilirubin, a yellow-orange pigment, found in the red blood cells. If there is a problem with the liver, bilirubin accumulates, causing yellow skin. Pancreatic cancer, which is among the most common in men and women, can block the bile duct, causing jaundice, too.
22. Persistent fever
A fever that comes and goes for several weeks in a row may be a sign of non-Hodgkin lymphoma, according to the American Cancer Society. Cancerous cells produce chemicals that raise the body temperature, causing a fever.
High fever can also indicate sepsis, a potentially lethal complication of an infection. Accompanying symptoms may include chills, a rash, and rapid heart beat.
23. Horizontal ridges on nails
Horizontal ridges on the nails, whether deep or discolored, can indicate vitamin deficiency, psoriasis, or a thyroid problem. Horizontal ridges can also be a symptom of a more serious condition, such as diabetes or kidney disease.
Ridges on the nails may also indicate chronic paronychia, an inflammatory disorder of the nail folds. This disorder is also characterized by redness and swelling and is frequently caused by an irritant or an allergen. They can be among these surprisingly dangerous but very common things in your home.
24. Voice sounding different
Laryngitis, an inflammation of the voice box, can cause hoarseness. With laryngitis, normal smooth movements in the voice box are obstructed by swelling, changing the sounds produced by the vibration of the vocal cords.
Hoarse voice may be a sign of laryngeal cancer. If this is the case, a patient may also experience swallowing difficulties, weight loss, and a persistent cough.
25. Frequent heartburn
If it feels like you’re getting heartburn after almost every meal, it may be time to see a doctor. If it occurs more than twice a week and no over-the-counter medications seem to make it go away, the underlying cause may be gastroesophageal reflux disease (GERD), a digestive disease in which stomach acid irritates the food pipe lining. GERD can be treated with several medications or surgery, if necessary. Just make sure the medication is not on the list of the most dangerous.