Cancers that commonly cause significant fatigue and sweating (especially night sweats) include lymphoma (Hodgkin's and Non-Hodgkin's) and leukemia, often alongside fever, weight loss, and swollen lymph nodes. Other cancers linked to these symptoms include liver cancer, bone cancer, carcinoid tumors, and mesothelioma, while some treatments for prostate or breast cancer can also induce sweats. These symptoms, particularly when unexplained, severe, and persistent, warrant medical investigation.
Leukemia and lymphoma are among the cancers associated with night sweats. Those associated with leukemia usually occur in conjunction with symptoms such as fatigue, weight loss, or excessive bruising. Leukemia-related sweats may also result from daytime fevers.
Twenty potential signs of cancer include **unexplained weight loss, persistent fatigue, unusual lumps or swelling, skin changes (sores that don't heal, new moles, color changes), changes in bowel/bladder habits, persistent cough or shortness of breath, hoarseness/voice changes, difficulty swallowing, persistent indigestion, unexplained pain, night sweats, unusual bleeding/bruising, mouth sores that won't heal, loss of appetite, fever, changes in vision/headaches, swelling in lymph nodes, nipple changes, painful urination/ejaculation, and swelling in the face/neck; these warrant a doctor's visit if they last more than a few weeks.
There are several reasons why a person will have excessive sweating in the face, including infections, hyperglycemia, tumors, medications, stress, and withdrawal from medications or drugs. A complete workup is required to determine the reason for the excessive sweating!
These symptoms can be caused by a wide range of medical conditions, including viral infections, dehydration, having low iron, or even a panic attack. Depending on your health history, it would be good to track other symptoms and report them to your doctor.
Inflammatory Bowel Disease (IBD): Conditions like Crohn's disease and ulcerative colitis, which fall under the umbrella of IBD, cause chronic inflammation in the digestive tract. This inflammation can lead to severe pain, fever, and sweating as the body responds to the inflammatory process [11].
Four common signs and symptoms of gastroenteritis (stomach flu) are watery diarrhea, vomiting, stomach pain/cramps, and a fever, often accompanied by nausea and generally feeling unwell, with dehydration being a key concern.
Health conditions that might cause excessive sweating include:
Excessive sweating, especially sweating of the head, can be a sign of a vitamin D deficiency. A change in the amount you sweat or your sweating patterns should be cause for concern.
See a GP if you're sweating excessively and:
it stops you from getting on with your daily activities. it happens at least once a week. it happens at night (you're having night sweats) you have a family history of excessive sweating.
Some general signs and symptoms associated with, but not specific to, cancer, include: Fatigue. Lump or area of thickening that can be felt under the skin. Weight changes, including unintended loss or gain.
About 90% of cancers are caused by environmental and lifestyle factors, not genetics, including smoking, poor diet (red meat, fried foods), alcohol, sun exposure, pollutants, infections, obesity, and inactivity; only 5–10% are due to inherited genetic defects, with most cancers arising from lifestyle-induced genetic mutations. Tobacco alone accounts for about a third of cancer deaths, while diet, obesity, and inactivity contribute significantly, with controllable factors being key to prevention.
When cancer is suspected there is a fast route within the NHS to get further tests and specialist advice to rule out cancer. These are called 2 week wait referrals and you should be seen within 2 weeks of being referred.
Changes in hormone levels can cause hot flushes and sweats. Your hormone levels may change because of the cancer itself or because of treatment. This includes treatments such as: surgery.
How patients described their first signs of lymphoma
Cancer itself, particularly certain types like lymphomas, can directly lead to increased sweating due to tumor activity or the body's inflammatory response. Hormonal changes, either cancer-induced or treatment-related, are significant primary causes, often manifesting as night sweats.
Certain problems such as diabetes, heart failure, anxiety, and overactive thyroid can cause heavy sweating. And some drugs may cause heavy sweating as a side effect.
Excessive sweating is a common symptom of autoimmune disorders such as rheumatoid arthritis, vasculitis, and lupus. Those with lupus are at higher risk of additional autoimmune diseases.
Supplements like magnesium, vitamin B complex, sage, and fish oil can provide some relief. Medications can also influence sweat levels, but it's important to consult your doctor for personalized advice. Remember, you've got options.
Sweating is controlled by the autonomic nervous system. This is the part of the nervous system that is not under your control. Sweating is the body's natural way of regulating temperature.
Viral and bacterial infections, such as the flu, strep throat, or COVID-19 can cause a fever. When your body temperature increases, it needs to cool down to prevent it from overheating, so you get chills and cold sweats. Depending on what's causing your fever, you may need a prescription medication.
Intense sweating, regardless of temperature or physical activity, can be a warning sign of a heart attack, especially if combined with other symptoms like nausea, chest pain, and dizziness. You might also experience the symptoms of a cold sweat — clammy hands, sweating, nausea, pale skin, and a feeling of a deep chill.
Gastrointestinal infections are infections that affect the digestive system, primarily caused by various bacteria, viruses, and parasites. These infections can result in symptoms like diarrhoea, vomiting, abdominal pain, and fever.
Gastroenteritis is often mistaken for stomach flu although it is actually an inflammation of the lining of the intestines caused by a virus, bacteria or parasites. Symptoms of gastroenteritis include diarrhea, abdominal pain, vomiting, headache, fever and chills.
5 Common Digestive Disorders