Common Medical Conditions Data Verified

Excessive Thirst - Causes, Diagnosis, and Treatment

Published on Feb 25, 2022 and last reviewed on Aug 11, 2022   -  4 min read


Excessive thirst can be associated with physiological or pathological causes. Read the article below to know about this condition in detail.

Excessive Thirst - Causes, Diagnosis, and Treatment


Thirst is the sensation felt by the body when there is a requirement of water for the body or when there is dryness. Consumption of spicy foods, performing exercises, hot weather, etc., can make us feel thirsty and that is considered to be normal. If someone feels excessively thirsty even after drinking fluids, it can indicate an abnormality in the body. Sometimes, it may also accompany fatigue and blurring of vision.

What Can Cause Excessive Thirst?

There can be normal as well as pathologic causes and they have been mentioned below:

If someone experiences thirst very often, then this has to be related to some underlying medical condition. The following could be the possible explanations or causes for the same;

This happens when there is inadequate intake of water or excessive loss of fluid from the body. This can alter body functions. Severe dehydration can be dangerous as it can prove to be fatal also. More focus should be given to infants and young children. The various causes for dehydration could be illness, increased sweating, a lot of urine excretion, diarrhea, or vomiting.

It is a clinical condition characterized by deficiency of insulin or inadequacy of the body to produce or utilize insulin. A patient suffering from diabetes can face increased thirst which could be due to increased blood sugar (hyperglycemia) levels in the body. It is one of the more commonly observed symptoms in diabetic patients.

This is the type of diabetes that occurs when the body is not able to regulate the fluid levels in the body properly. This leads to an imbalance as well as loss of water in the body which ultimately causes excessive urination and thirst.

This is a clinical condition characterized by a thirst mechanism defect in the body that causes an increase in thirst leading to increased liquid intake and frequent urination.

It is a life-threatening condition caused by a severe inflammatory reaction due to bacterial or other infections.

How Can It Be Diagnosed?

When you consult your physician, they may ask you about your past medical history, personal information, family history, etc., along with the signs and symptoms being faced by you. You may be asked questions regarding frequency of urination, intake of water, feeling of thirst, any other associated health problems, etc.

Following that, a physical examination may be performed. Also, certain laboratory tests may be required to confirm the diagnosis. Following are the more commonly done tests:

How Can It Be Treated?

The treatment depends on the underlying medical condition. If it is due to diabetes, then medications may be prescribed to control diabetes along with adequate intake of water and food. If it is psychological, then behavioral therapy may be considered. If it is due to medications, then an alternative for those medications can be prescribed. Apart from these, lifestyle changes, dietary patterns, etc., may be modified to get better results.

What Is the Normal Level of Water Intake?

An adequate amount of water, especially 2.5 to 3 liters should be consumed in a day to remain healthy. You can also enhance the water intake by consumption of various water-rich foods which are as follows:

You can check your urine to assess the adequate intake of water. Light-colored, high-volume urine without any heavy odor indicates adequate consumption of water.

Water is essential for various functions of the body. All the body parts, including organs, tissues, and cells need it to function properly. Following are the basic functions of water in the body:

The following conditions indicate that you should consume more water:

Are There Any Risks of Excessive Thirst?


Yes, when you have excessive thirst, you may consume excessive water without adequate excretion which can lead to overhydration. The various causes can be excessive consumption of water to compensate for normal or pathologic loss of fluids from the body. Even diseases of the kidney, liver, or heart can cause it. Overhydration can lead to a severe decrease in blood sodium level which can result in confusion and seizures, more commonly if it develops suddenly.

When Should I Seek Medical Advice?

Thirst indicates that the body has fewer fluids. But, if thirst remains constant and does not settle down even after drinking fluids, it can be associated with an underlying condition. It could be physical or psychological.

Following are the indications to seek medical advice:


Excessive thirst, as mentioned above, could be normal or pathologic. It is important to talk to your physician if you have constant excessive thirst as it can turn into a severe condition if not managed on time. Hence, early diagnosis is important. Online medical platforms have made this consultation process easy as doctors are just a click away. To know more about this condition, consult a physician or specialist online.

Article Resources

Last reviewed at:
11 Aug 2022  -  4 min read




Comprehensive Medical Second Opinion.Submit your Case

Related Questions & Answers

I have elevated SSA. Can the cause be fibromyalgia or lupus?

Query: Hello doctor, I am a 36 year old mother and a veterinarian. I was recently diagnosed with lupus by a rheumatologist. The only abnormality in my blood work was elevated SSA and dsDNA autoantibodies with a speckled pattern. My CBC, UA, and the biochemical panel were normal. My symptoms included severe...  Read Full »

My BP is normal at home, but high in the clinic. Why?

Query: Hi doctor, I have been regularly taking hypertension medicines Amlopin-M and Omnitan-H for a long time. My blood pressure was normal when measured at home with the help of an automatic BP monitor and a mercury sphygmomanometer by a doctor's assistant in my home. But, in the clinic, my doctor diagnos...  Read Full »

Have You Been Diagnosed With Diabetes? Read This To Know What Next

Article Overview: Diabetes is a metabolic disease that affects the way your body uses blood sugar. Learn about the types, symptoms, and treatment of diabetes here. Read Article

Revathi Sundaramurthy
Revathi Sundaramurthy
Ayurveda Specialist

Diabetes mellitus is a metabolic disorder. In this disorder, there is increase in blood sugar level. The cause may be lack of insulin or cells fail to respond and utilize insulin. It is considered as one among lifestyle disorders as unhealthy lifestyle is the major cause. Leading a healthy life styl...  Read Article

Popular Articles Most Popular Articles

Do you have a question on Excessive Thirst or ?

Ask a Doctor Online

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.