13 Signs of Appendicitis You Should Not Ignore

2. Painful Coughing

You may notice sharp pain in your lower right belly when you cough. This pain can feel sudden and intense. It often gets worse with each cough. Coughing tightens your stomach muscles. If your appendix is swollen from appendicitis, this pressure irritates the lining of your abdomen and triggers stronger pain.

You may also feel pain when you sneeze, laugh, take a deep breath, or move quickly. The pain often starts near your belly button and then shifts to the lower right side. After it moves, coughing can make the discomfort more focused in that spot. Pressing the area and then releasing may also increase pain when you cough.

This tenderness may become more noticeable as irritation spreads around the appendix. Pain does not feel the same for everyone, and children, older adults, and pregnant women may not follow the usual pattern. In some cases, coughing may trigger only mild discomfort at first before sharper pain develops later.

3. Frequent and Painful Urination

You may notice that you need to urinate more often than usual. The urge can feel sudden and hard to control. At the same time, passing urine may cause pain or a burning feeling. Appendicitis can irritate your bladder when a swollen appendix presses against it.

This pressure can create the feeling that your bladder is full, even when it is not. You may pass only small amounts of urine each time. Painful urination can be mistaken for a urinary tract infection. However, when it appears with lower right abdominal pain, nausea, or fever, it may signal appendicitis.

Warning signs can include pain that starts near your belly button and moves to the lower right side, fever or chills, nausea or vomiting, belly pain that worsens with movement or coughing, and frequent trips to the bathroom with little urine passed.

4. Vomiting

Vomiting is a common sign of appendicitis. You may feel sick to your stomach soon after the pain begins. In many cases, nausea starts first, followed by vomiting within a few hours. This symptom often appears after pain near your belly button or lower right abdomen.

If vomiting begins after the belly pain starts, concern increases. Vomiting that happens before any belly pain may point to a different cause, such as a stomach virus. You may also lose your appetite. The thought of food can make nausea worse, and eating can trigger more vomiting.

Frequent vomiting can lead to dehydration, with signs can include dry mouth, dark urine, weakness, and lightheadedness. Vomiting linked to appendicitis often does not improve on its own and may worsen as inflammation increases. Ongoing belly pain with nausea and vomiting should be treated as a warning sign.

5. Gas Problems

Gas problems can be an early sign of appendicitis. You may feel bloated or notice that your stomach feels tight and full. This pressure can build quickly and feel different from normal gas after eating. The discomfort may seem deeper and more constant than typical digestive upset.

Unlike ordinary bloating, the sensation may continue even when you have not eaten recently. You might also have trouble passing gas. When your appendix becomes inflamed, it can slow how your intestines move. Gas can become trapped inside your abdomen and increase discomfort, sometimes causing sharp pain.

The pain often starts near the belly button and later shifts to the lower right side. Cramping, nausea, or a low fever along with bloating can raise more concern than gas alone. Simple gas usually improves after passing gas or using the bathroom. Gas-related discomfort from appendicitis often does not improve with these usual measures and may worsen over time.

6. Fever and Chills

You may develop a low‑grade fever when your appendix becomes inflamed. Your body raises its temperature to fight infection. In early appendicitis, the fever is often mild, usually between 99°F and 100.5°F. As the infection worsens, your temperature can rise higher along with stronger lower right abdominal pain.

Chills can also occur. You may feel cold and start to shiver, even in a warm room. Chills often mean your body is reacting to infection. A sudden fever with worsening belly pain is more concerning than a mild fever alone.

If the appendix bursts, bacteria can spread in your abdomen and cause a serious infection. Children and older adults may not show a high fever. Even a small rise in temperature with stomach pain, nausea, or loss of appetite can point to appendicitis.

7. Appetite Loss

You may notice that you suddenly do not feel like eating. Foods that usually smell or taste good may upset your stomach. This change can appear early in appendicitis and often begins around the same time as belly pain.

The pain may start near your belly button and then move to the lower right side. As the pain becomes stronger, your desire to eat often drops more, and mild nausea may also develop. Even small amounts of food can make you feel overly full or uncomfortable.

Many problems, including stomach viruses, can reduce appetite. With appendicitis, appetite loss usually comes with steady or worsening pain that does not improve with rest or after passing gas. Unlike simple indigestion, the loss of appetite often continues as the abdominal pain becomes more focused.

8. Disorientation

Disorientation means you feel confused about where you are, what time it is, or what is happening around you. You may struggle to focus or answer clearly. In appendicitis, sudden confusion can signal a serious complication, especially if the infection has worsened or spread.

When the appendix becomes badly infected or bursts, bacteria can spread through the abdomen and enter the bloodstream, which can lead to sepsis that affects the whole body. As the infection spreads, it can affect brain function. You may notice trouble staying awake, slurred speech, slow responses, pale or blotchy skin, or fast breathing.

In older adults, confusion may appear before strong belly pain. There may be forgetfulness, restlessness, or unusual quietness. Disorientation with severe abdominal pain, fever, or breathing problems is a medical emergency.

9. Feeling Out of Sorts

You may notice a general sense that something is not right. You can feel tired, uneasy, or weak without a clear reason. This vague feeling often appears before strong pain begins. Many people describe it as feeling “off” or run down, even without clear stomach symptoms at first.

Your body reacts to infection by raising its temperature and increasing inflammation. This response can make you feel achy and drained. Mild stomach discomfort may begin near your belly button and later shift to the lower right side. As the pain grows stronger, the overall sense of illness often increases.

Other signs can include loss of appetite, nausea or vomiting, low fever, constipation or diarrhea, and needing to urinate more often. These symptoms may seem minor on their own, but when they appear together and continue to worsen, appendicitis becomes more likely.

10. Diarrhea

You may notice diarrhea along with belly pain if you have appendicitis. This symptom does not affect everyone, but it can occur, especially in children. Diarrhea linked to appendicitis is often mild at first. You may pass loose stools several times a day without blood. It is easy to mistake this for a stomach virus or food poisoning.

With appendicitis, diarrhea often appears with other warning signs. Pain may start near your belly button and then move to the lower right side. The pain usually worsens over hours and does not improve after using the bathroom.

Other symptoms can include nausea or vomiting, loss of appetite, low‑grade fever, and pain that worsens with movement or coughing. When diarrhea comes with increasing lower right abdominal pain, irritation of the appendix may be the cause.

11. Nausea

Nausea is a common early sign of appendicitis. You may feel sick to your stomach soon after the pain begins. This feeling often comes before vomiting, but not always. The nausea usually starts after pain near your belly button or lower right side appears.

As the pain grows stronger, your stomach may feel more upset. You may lose interest in food and feel uneasy at the thought of eating. Vomiting can happen once or several times, and it does not always relieve the nausea. This pattern can suggest a problem with your appendix.

Some people think they have a stomach virus at first, since viruses often cause diarrhea and spread between people. Appendicitis pain tends to settle in the lower right side and worsen over time. With appendicitis, nausea is more concerning when it appears together with steady belly pain that does not improve.

12. Sepsis

Sepsis is a life-threatening reaction to infection that can develop if appendicitis is not treated and your appendix bursts. When this happens, bacteria can spread through your abdomen and enter your bloodstream, sometimes called septicemia. This infection can quickly trigger a dangerous whole-body response that begins to damage your own tissues and organs.

You may notice very severe abdominal pain. Your body temperature may become very high or very low. A fast heart rate, rapid breathing, or shortness of breath can also occur. Some people become confused or develop pale, blotchy, cold, or clammy skin. Extreme weakness, dizziness, chills, or heavy sweating may also happen.

There may be a strong sense that something is very wrong. As sepsis worsens, blood pressure can drop dangerously low and reduce blood flow to vital organs. This can rapidly lead to shock, organ failure, or death without immediate treatment.

13. Abdominal Swelling

Abdominal swelling can appear as your appendix becomes inflamed and irritated. You may notice that your lower right side looks or feels bloated. This swelling often develops after the pain begins. The area can feel tight or firm, and even light pressure may cause discomfort.

As inflammation increases, fluid and gas can collect in your abdomen. This buildup makes the swelling more noticeable. You may feel full without eating much, and passing gas can become difficult. Your belly may seem larger than usual, and clothes may feel tighter around your waist.

Swelling becomes more serious if the appendix bursts and infection spreads inside your abdomen. Warning signs can include pain that moves to the lower right side, fever, nausea or vomiting, and trouble passing gas. Rapid or widespread swelling is a medical emergency.