14 Common Symptoms of Tuberculosis

2. Severe Coughing

You may notice a cough that does not go away. This cough often lasts three weeks or longer and feels different from a short-term cold or flu. It can start mild and slowly become stronger over time.

The cough often happens every day and may get worse at night or early in the morning. You might feel chest pain or tightness when you cough. These signs can make daily tasks harder and disrupt your sleep.

In some cases, you may cough up thick mucus. The mucus can look cloudy or yellow. A small amount of blood can also appear, which can be alarming and should not be ignored. The infection irritates and damages lung tissue, so your body tries to clear the bacteria by coughing, but the irritation keeps the cough going. Rest alone may reduce the frequency, but usually does not stop it.

You may also feel tired after long coughing spells. Talking, laughing, or light activity can trigger more coughing. If you notice a long-lasting cough along with fever, weight loss, or night sweats, these signs often appear together rather than alone.

3. Weight Loss

Weight loss is a common symptom when you have active tuberculosis. You may lose weight without trying, even if you eat the same amount of food. This change often happens slowly, so you might not notice it at first.

The infection uses a lot of your body’s energy. Your immune system works harder to fight the germs, which burns more calories each day. At the same time, you may feel less hungry, which lowers how much you eat.

You might notice weight loss along with other general signs, such as low energy or feeling unwell. These symptoms can last for weeks or months. Because the change feels gradual, many people blame stress or poor sleep instead. You may lose a small amount at first, then more over time if the illness continues.

This symptom can affect people of any age. It appears more often when the disease stays untreated and continues to strain your body. Unexplained weight loss alone does not confirm tuberculosis, but it often signals that something serious needs attention.

4. Night Sweats

Night sweats are a common symptom of tuberculosis. You may wake up with soaked sheets or clothing, even when the room feels cool. This sweating often happens repeatedly and can disrupt your sleep.

You might notice that the sweating feels deeper than normal heat-related sweating. It often affects your chest, back, and neck. You may also feel chilled after waking because your body lost so much moisture. The infection affects how your body controls temperature. Your immune system stays active while you sleep, which can trigger sweating. This process often continues for weeks or months.

Night sweats linked to tuberculosis often appear with other symptoms, such as tiredness, weight loss, or a long-lasting cough. The sweating may start mild and slowly become more intense over time. Night sweats alone do not confirm tuberculosis. However, when they continue and occur with other symptoms, they can signal an ongoing infection that needs medical care.

5. Chills

Chills happen when your body feels cold and shaky, even in a warm room. With tuberculosis, chills often come from your body reacting to the infection. You may notice sudden shivering or teeth chattering without a clear reason. You can have chills at any time of day, but many people feel them in the evening or at night. They may come and go, or last for hours. Chills often appear along with fever, sweating at night, and feeling weak.

When tuberculosis germs grow in your body, your immune system works harder to fight them. This effort can raise your body temperature. As your temperature changes, you may feel cold and start to shake. Chills can disrupt your sleep and daily routine. You may wake up feeling cold, damp, and tired. These repeated episodes can add to fatigue and make it harder to focus during the day.

6. Loss of Appetite

You may notice that food does not interest you as much as before when you have tuberculosis. You might skip meals or feel full after a few bites. This change often starts slowly and can last for weeks.

Your body uses a lot of energy to fight the infection. That process lowers hunger signals in your brain. Fever and night sweats can also reduce your desire to eat, even when you know you need food.

Loss of appetite often appears with other symptoms, such as tiredness, weight loss, and a general feeling of being unwell. Together, these signs can affect your daily routine and energy level.

This appetite change can affect people with lung infection and those with infection in other parts of the body. The symptom does not point to one single area. It reflects how the illness affects your whole system and your ability to maintain normal eating habits.

7. Fatigue

You may feel tired most of the day when you have tuberculosis. This fatigue often feels deeper than normal tiredness. Rest may not help much, and the low energy can last for weeks. Your body uses a lot of energy to fight the infection, so you may feel weak even after simple tasks. Walking short distances, doing chores, or focusing at work can feel harder than usual.

Fatigue can appear with other symptoms, or it may show up early on its own. You might notice that you sleep more but still wake up tired. Your body stays busy trying to control the illness, which drains your strength. This tired feeling can also affect your mood and focus. You may feel slower, less alert, or less interested in daily activities.

8. Chest Pain

Chest pain is a common symptom when tuberculosis affects your lungs. You may feel a dull ache or a sharp pain in the chest area. The pain often links to swelling and irritation inside the lungs. You may notice the pain more when you cough, take a deep breath, or move your upper body. This happens because the lungs expand and press against irritated tissue. The pain can stay mild at first and grow stronger over time.

Tuberculosis can cause a long-lasting cough that strains your chest muscles. Repeated coughing can make the chest feel sore or tight. This soreness can last even when you rest. Chest pain may appear with other symptoms at the same time, such as ongoing cough, low energy, or fever.

The pain does not always feel the same for everyone. Some people describe pressure or heaviness. Others feel a stabbing pain that comes and goes. Chest pain from tuberculosis usually develops slowly. It often reflects ongoing lung damage rather than a sudden injury.

9. Wheezing

Wheezing means you hear a high‑pitched, whistling sound when you breathe. You may notice it more when you breathe out. This sound happens when air struggles to move through narrowed or irritated airways.

With tuberculosis, wheezing can appear when infection affects the lungs. Swelling, mucus, or damage inside the air passages can reduce airflow. This change can create the sound you hear during breathing. You may notice wheezing along with other lung symptoms. These signs often develop slowly and can come and go.

Wheezing alone does not confirm tuberculosis, but it can appear as part of the illness and usually worsen at night or when you lie flat. Cold air, smoke, or dust can also make it more noticeable. In some people, wheezing starts mild and becomes clearer as lung irritation increases.

10. Shortness of Breath

Tuberculosis can cause shortness of breath by damaging your lungs. You may notice breathing faster or harder during normal activities like walking or climbing stairs, and this change often starts slowly. As the infection progresses, you might feel tightness in your chest, or cause shallow breathing which makes it difficult to take a deep breath.

Tuberculosis reduces how well air moves in and out of your lungs, making it harder for your body to get enough oxygen. You may also develop other symptoms such as a long-lasting cough, chest pain, or coughing up mucus. The combination of these symptoms can make daily tasks more tiring.

Shortness of breath can feel different for each person. Some feel winded only during activity, while others notice it even at rest. If tuberculosis spreads beyond the lungs, swelling, fluid buildup, or general weakness can put extra strain on your body and make breathing more difficult.

11. Cognitive Impairment

Tuberculosis can affect how you think, remember, or focus, and these changes may start out subtle but become more noticeable as the illness continues. You might struggle to concentrate, follow conversations, or make simple decisions, and tasks that once felt easy may take more effort. Poor sleep, fever, and low appetite can make thinking problems worse.

Cognitive changes may include trouble recalling recent events, moments of confusion or disorientation, slower thinking or reaction time, difficulty maintaining attention, or problems finding the right words during conversation.

These changes can feel frustrating or worrying, and they may come and go during the illness. In some cases, infection in the brain can cause headaches, mood changes, or confusion along with memory problems.

12. Malaise

Malaise is a general feeling of being unwell that affects your daily life. With tuberculosis, this feeling often starts slowly, with low energy that lasts for weeks. Simple tasks can feel harder, and rest may not help much. Many people link malaise to stress or poor sleep because it does not cause sharp pain or obvious signs. It often blends into daily routines and may go unnoticed.

Malaise can appear with other symptoms like low energy, trouble focusing, or a sense that something is wrong. This reflects your body’s response to long-lasting infection, as your immune system uses energy to fight the illness. This symptom can come and go or stay constant, and tracking how long it lasts can help you recognize that it is more than ordinary tiredness.

13. Weakened Immune System

Tuberculosis can weaken your immune system as your body uses energy to fight the infection. You may get sick more often or take longer to recover from common illnesses, and small infections may feel stronger than usual. Cuts and colds can heal slowly.

When the immune system is under strain, tuberculosis can grow and spread more easily, which may worsen symptoms and slow recovery. Poor nutrition, ongoing stress, other long-term illnesses, or treatments that lower immune activity can also raise your risk.

A weakened immune system may show up through frequent infections, ongoing tiredness, slow healing, or unplanned weight loss. These changes often overlap and can affect overall resilience.

When your immune system struggles, symptoms like fatigue, fever, and night sweats may become more noticeable. Paying attention to these changes helps you understand how the infection affects your body.

14. No Symptoms

You can have tuberculosis without feeling sick, which is often called inactive infection. The germs stay in your body but remain asleep and do not cause problems right away. You cannot spread the germs to others during this stage. You do not cough, feel pain, or notice fever or weight loss. You can go to work, attend school, and live your normal life without signs that anything is wrong.

Even without symptoms, the germs still live in your body. Over time, they can wake up and cause active disease if your body’s defenses become weaker due to stress, poor nutrition, aging, or another illness. Routine tests usually reveal this condition. Many people find out after a screening for work, school, travel, or close contact with someone who has active tuberculosis.