Published May 10, 2023 by

High White Blood Cell Count: Causes, Symptoms, Diagnosis & Treatment

General Discussion

White blood cells or leukocytes, known as "defenses", are of great importance for the proper functioning of the immune system.  Its main function is to combat foreign agents and substances such as germs, bacteria and viruses.

They represent 1% of the total blood, the values ​​or proportions that we have in the body can indicate certain diseases linked to bacteria or allergies in the body.

These are found in the blood, tonsils, spleen, lymph nodes, and parts of the immune system.

There are different types of leukocytes (lymphocytes, neutrophils, monocytes, eosinophils, and basophils) with differentiated functions.  Lymphocytes respond to external agents, neutrophils destroy bacteria, and eosinophils increase in the presence of allergies, asthma, or infections.

Range of leukocyte in blood:

The values ​​will depend on gender and age.  Typically, there should be between 4,500 and 11,000 leukocytes per microliter of blood in adults.

If it exceeds 11,000 there is an excess of white blood cells.  Having high leukocytes by itself is not a disease, but it does alert us to a problem in our health that must be treated to avoid complications.

Causes of high leukocytes

The reasons why someone may have high white blood cells are:

*Infections by bacteria or viruses.

*Administration of drugs such as corticosteroids or adrenaline, as well as those used to treat cancer or asthma.



*Allergic reactions, commonly severe.

*Bone marrow problems.

*Acute or chronic leukemia.


*Polycythemia vera.  It also causes the red blood cells to be higher than normal.

*Rheumatoid arthritis.


*Whooping cough.

Symptoms of high leukocytes

The symptoms of leukocytosis depend on each cause, which we have already seen can be many.  Among the most common, although they will vary depending on the severity of each situation, are:




*Dizziness and fainting

*Bruises without apparent causes.

*Excessive sweating

*Abnormal bleeding

*Reduced appetite and weight loss.

*Vision problems.

*Tingling in the joints and abdomen.

*Difficulty breathing.


The evaluation of the number of leukocytes is useful to identify the presence of inflammatory or infectious processes in the body, evaluate the need for a bone marrow biopsy or the response to treatment with chemotherapy, radiotherapy or other forms of therapy.


It is the part of the blood count that includes the evaluation of white blood cells.  It comprises the global and differential leukocyte counts.

This exam is indicated in the diagnosis and monitoring of infectious, inflammatory, allergic, toxic and neoplastic processes.

Reference values ​​for total leukocytes and for different leukocyte types vary with age.  Children tend to have higher global counts, with relative percentages of lymphocytes higher than those of adults, a difference that tends to disappear after puberty.

Relative leukocyte counts are commonly used in clinical practice, but may not reflect a real change;  this must be proven by the absolute count, which considers the overall number of leukocytes.

How can improve High white blood cell count?

1.The disease must be identified in internal medicine
2.The reference range for the white blood cell count is important for the daily number of individuals.  3.However, to determine an individual reference range, it is necessary to calculate from medical   examination data over several years.
4.Therefore, it is better to be able to show your white blood cell data to a certain extent to your doctor.  5.If there is an increase or decrease from the usual value, it is considered to be a viral infection that is   easy to heal naturally if the change is mild.
6.If it's not mild, ask your doctor to identify the changing disorder.
7.Also, smoking cessation reduces white blood cells, so smokers should aim to quit smoking.