Regularly checking your skin can help you notice changes that might otherwise go unnoticed.
When to seek help: Arrange a dermatological assessment for a new or changing skin lesion, particularly one that bleeds, grows, or does not heal.
16. Excessive Thirst and Frequent Urination
Feeling thirsty after exercise or during hot weather is normal. However, persistent excessive thirst combined with frequent urination may indicate elevated blood glucose levels.
These are two classic symptoms of diabetes.
When blood glucose remains too high, the kidneys attempt to remove excess glucose through urine. This can increase urination and contribute to dehydration, making the person feel unusually thirsty.
Other possible symptoms include:
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Increased hunger.
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Unexplained weight loss.
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Blurred vision.
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Fatigue.
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Slow-healing wounds.
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Recurrent skin or urinary infections.
Type 2 diabetes can develop gradually, and some people experience few noticeable symptoms for years.
This is one reason regular health assessments are important, particularly for people with risk factors such as a family history of diabetes, excess body weight, high blood pressure, or a history of elevated blood glucose.
When to seek help: Arrange blood glucose testing if excessive thirst and frequent urination persist. Vomiting, abdominal pain, deep or rapid breathing, confusion, or severe dehydration may indicate a serious diabetic emergency and require immediate medical attention.
17. Persistent Vision Changes
Vision can change gradually with age, but sudden or unexplained changes should never be ignored.
Warning signs include:
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Blurred vision that develops unexpectedly.
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Sudden loss of vision in one or both eyes.
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Double vision.
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New flashes of light.
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A sudden increase in floating spots.
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A dark curtain or shadow across part of the visual field.
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Eye pain accompanied by vision changes.
Some vision problems are caused by refractive errors or cataracts. Others may indicate retinal detachment, glaucoma, vascular problems, or neurological conditions.
For example, a sudden increase in flashes and floaters, particularly when accompanied by a shadow across the visual field, can indicate a retinal tear or detachment.
Sudden vision loss may also occur during a stroke or transient ischemic attack.
When to seek help: Sudden vision loss, a curtain-like shadow, or new flashes and floaters requires urgent eye assessment. Vision changes accompanied by facial weakness, speech difficulties, or one-sided numbness should be treated as a possible stroke.
18. Persistent Swelling in the Legs or Ankles
Swelling in the legs can occur after prolonged sitting, standing, travel, or physical inactivity.
However, persistent or unexplained swelling may indicate an underlying circulatory, cardiovascular, kidney, or liver problem.
Common causes include:
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Chronic venous insufficiency.
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Heart failure.
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Kidney disease.
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Liver disease.
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Certain medications.
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Blood clots in the deep veins.
Pay attention to whether swelling affects one leg or both.
Sudden swelling in one leg, particularly when accompanied by pain, warmth, redness, or tenderness, may indicate deep vein thrombosis.
This condition is important because a blood clot can sometimes travel to the lungs and cause a potentially life-threatening pulmonary embolism.
Swelling in both legs may be associated with fluid retention, heart failure, or other systemic conditions.
When to seek help: Have persistent or unexplained swelling assessed by a healthcare professional. Sudden one-sided leg swelling requires urgent evaluation. If it occurs with chest pain, fainting, or shortness of breath, seek emergency care.
19. Persistent Changes in Mental Function or Memory
Occasionally forgetting a name or misplacing an object is a normal part of everyday life.
However, repeated memory problems, confusion, difficulty concentrating, or noticeable changes in behavior may require medical evaluation.
Potential causes include:
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Sleep disorders.
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Vitamin B12 deficiency.
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Thyroid dysfunction.
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Depression.
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Medication side effects.
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Neurological conditions.
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Dementia.
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Infections or metabolic disturbances.
It is important to distinguish gradual cognitive changes from sudden confusion.
A person who gradually struggles with familiar tasks, repeatedly forgets important information, or becomes increasingly disoriented may need assessment for cognitive impairment.
Sudden confusion, on the other hand, can indicate an acute medical problem such as infection, low blood glucose, medication toxicity, or stroke.
Family members may notice changes before the affected person recognizes them. Their observations can provide valuable information during a medical assessment.
When to seek help: Arrange an appointment for progressive memory or cognitive changes. Sudden confusion, inability to stay awake, or confusion accompanied by weakness or speech problems requires emergency assessment.
20. Wounds That Heal Slowly or Do Not Heal
The body normally repairs minor cuts, scratches, and injuries over time.
However, a wound that remains open, repeatedly breaks down, becomes increasingly painful, or shows no meaningful improvement may indicate an underlying health issue.
Slow wound healing can be associated with:
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Diabetes.
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Poor circulation.
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Venous disease.
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Nutritional deficiencies.
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Chronic inflammation.
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Infection.
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Pressure injuries.
People with diabetes may develop nerve damage that reduces sensation in their feet. As a result, they may not notice small injuries until they become more serious.
Poor circulation can also reduce the oxygen and nutrients delivered to damaged tissue, slowing the healing process.
Warning signs of an infected wound include increasing redness, warmth, swelling, worsening pain, pus, or fever.
A wound that does not heal may occasionally be a sign of skin cancer, particularly when it repeatedly bleeds or forms a persistent crust.
When to seek help: Have wounds that are not healing normally examined, especially if you have diabetes or circulation problems. Rapidly spreading redness, severe pain, fever, or signs of systemic infection require urgent medical attention.
Why Early Detection Can Make Such a Difference
Recognizing symptoms early is not simply about finding diseases sooner. It can change the entire course of medical treatment.
Many health conditions become more complicated when diagnosis is delayed. Early evaluation may allow healthcare professionals to identify the cause, begin appropriate treatment, and reduce the risk of complications.