Sweating in the middle of the night

If a person sweats while sleeping, this symptom must be taken seriously, because sweating while sleeping is not a normal physiological phenomenon, but a pathological phenomenon. For normal people, sweating symptoms only occur when the sweat glands are stimulated or the weather is too hot, so why does a person like to sweat in the second half of the night while sleeping?

Cold sweats during sleep at night is a symptom characterized by abnormal sweating after falling asleep and stopping sweating after waking up, also known as night sweats. According to the clinical manifestations of patients with night sweats, they can be divided into three types: mild, moderate and severe.

1. Mild night sweats

Most people sweat easily when they are deep in sleep, around 5 a.m., or 1 to 2 hours before waking up. The amount of sweat is less, and they only feel a little sweat on the whole body or certain parts of the body after waking up. No sweat will be secreted again after waking up. It is usually not accompanied by any discomfort.

2. Moderate night sweats

Most people sweat soon after falling asleep, and their sleeping clothes may even be soaked through. The sweat stops after waking up, and after wiping the sweat off the body, they will not sweat again when they go back to sleep. This type of night sweats causes the patient to feel hot and sweat, and sometimes to feel dry mouth and throat after waking up.

3. Severe night sweats

Shortly after falling asleep or just closing your eyes and about to fall asleep, you will sweat a lot. You will wake up after sweating, and the sweat will stop instantly after waking up. Falling back to sleep may cause sweating again. The amount of sweating is large, and the sweat often has a light salty taste, or is mixed with sweat odor.

What causes cold sweats when sleeping at night?

1. Environmental factors, such as poor air circulation in the sleeping environment and poor air permeability of bedding, etc.

2. Physical weakness, such as physical weakness after surgery, mental tension, psychological pressure, etc.

3. Suffering from various chronic diseases for a long time

Hyperthyroidism

Due to hyperthyroidism, excessive thyroid hormone is secreted and the metabolic rate increases, which manifests as increased nerve excitability. Overexcitement of the sympathetic nerves can cause heat intolerance, excessive sweating, and night sweats.

diabetes

The main reason for excessive sweating in diabetic patients is autonomic nervous system dysfunction and sympathetic nerve excitement, which leads to increased secretion of sweat glands; secondly, increased blood sugar metabolism rate is also one of the reasons for excessive sweating in diabetic patients.

tuberculosis

Night sweats are one of the symptoms of tuberculosis poisoning. It is the result of the toxins of tuberculosis bacteria and their metabolites stimulating the central nervous system, leading to dysfunction of the autonomic nervous system.

Tumor

Some malignant tumors may manifest as night sweats and weight loss in the early stages. Common tumors that can cause night sweats include lymphoma and leukemia.

Tips: Usually, malignant tumors do not only cause night sweats as a symptom, but are also accompanied by weight loss, low fever, etc., so don’t guess that you have a tumor just based on night sweats.

other

In addition, diseases such as hypertension, menopausal syndrome, hypoglycemia, systemic lupus erythematosus, and endocarditis.

Tips: Clinically, most night sweats are caused by autonomic dysfunction, and its pathogenesis is mainly due to abnormal excitement of the sympathetic nerves.