Weakness that drains and completely exhausts you is common with the flu. Compared to a regular cold, the fatigue associated with the flu comes on rapidly and can last up to 2 or 3-weeks before your energy fully returns.
9. Sore Throat
One of the most common symptoms of the flu is a sore throat, which can be described as burning or scratchy. It may cause glands in the neck to swell and swallowing to become difficult.
10. Pain and Sensitivity of the Eyes
It is common for people with the flu to have aches and pains in their muscles, but they may also experience such feelings in and around their eyes, particularly when moving them. In addition, Livestrong says other ocular symptoms of the flu can include “sensitivity to light,” known as photophobia, and a “burning sensation.”
While the source says that these symptoms tend to go away on their own, in cases where the eyes are “very red, produce discharge or get worse instead of better,” it is advised that the individual seek medical attention.
11. Warm, Flushed, and Sweaty Skin
As mentioned earlier, a common symptom of the flu is a high fever, which can cause the skin to be warm, flushed, and sweaty, especially on the face. This happens because, when your internal temperature reaches fever level (99.5-degrees Fahrenheit or 37.5-degrees Celsius), the blood vessels close to the skin expand in order to help the body cool down.
The Merck Manual indicates that you may also notice this redness in other areas, such as the mouth, throat, or even in the whites of the eyes, which can appear bloodshot and watery.