Headache, fever, no cold symptoms?

summary

Infection fever, general discomfort, this disease to patients brought about by the harm is very big, such as laziness, fatigue, limb weakness, headache, nasal congestion and other symptoms, temperature increases, headache like wearing hoops as tight and heavy, forehead, occipital or bilateral head often appear dull pain, distending pain or jumping pain. So let's talk about head fever and headache?.

Headache, fever, no cold symptoms?

First, under normal circumstances,  The hypothalamus has a center for heat production and heat dissipation, which can sense the information from the external environment and the temperature changes in the body, and maintain the body temperature at 37 ℃ by automatically regulating the relaxation and contraction of skin blood vessels, the secretion of sweat glands or the movement mode of skeletal muscle ° In order to ensure the smooth progress of various metabolism in the body.

Second: fever is often the result of this pair of central dysfunction, all infection, poisoning, dehydration, allergy, endocrine disorders or other physical and chemical factors can cause fever. When fever occurs, the original equilibrium conditions of the body are disturbed.

Third, the metabolic process accelerates and the heat production increases; At the same time, the consumption of glycogen, lipid brain and protein stored in the body increases, and many harmful metabolites are produced, such as lactic acid, carbon dioxide, adenosine and potassium ion; When fever, the sympathetic nerve is excited and can produce a lot of catecholamines. These substances can cause pain and dilate blood vessels. Blood vessels dilate and stretch the painful peripheral nerves of blood vessels, causing headache.

matters needing attention

In addition, the pathogenic factors themselves can directly cause headache, such as upper respiratory tract infection involving paranasal sinuses leading to rhinogenic headache; The direct action of pathogen toxin on blood vessels can cause small vessel dilation paralysis and increase permeability; Infection invading meninges can cause inflammation and intracranial hypertension headache. It can be said that fever and headache are just different reactions of the infected body to pathogenic factors.