Human Diseases – Causes, Symptoms, Diagnosis, Treatment & Medicines

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Comprehensive guide on human diseases: causes, symptoms, diagnosis tests, treatment methods, medicines, and preventive tips. Stay informed and healthy.

1. Fever (High Temperature)

Causes:

Viral infections (flu, dengue, COVID-19)

Bacterial infections (typhoid, urinary tract infection)

Heatstroke, dehydration, inflammation

Symptoms:

Body temperature above 100.4°F

Chills, sweating, headache, fatigue

Loss of appetite

Diagnosis / Tests:

Body temperature measurement

Blood test (CBC)

Urine test (if infection suspected)

Chest X-ray (if pneumonia suspected)

Treatment Methods:

Rest and hydration

Cool compresses for comfort

Manage underlying cause (antibiotics for bacterial infection)

Medicines:

Paracetamol (500–1000 mg) – fever reducer

Ibuprofen (200–400 mg) – for pain and inflammation

Prevention / Recommendations:

Wash hands and maintain hygiene

Avoid contact with infected persons

Stay hydrated and rest

2. Common Cold & Flu

Causes:

Viral infections (Influenza virus, Rhinovirus)

Seasonal changes, weak immunity

Symptoms:

Runny or blocked nose

Sneezing, sore throat

Mild fever, body aches

Diagnosis / Tests:

Physical examination

Rapid influenza diagnostic test (if necessary)

Treatment Methods:

Symptom relief: hydration, rest, warm fluids

Manage fever and pain

Medicines:

Paracetamol / Ibuprofen – fever, aches

Antihistamines (Cetirizine, Loratadine) – sneezing

Decongestants (Pseudoephedrine) – nasal blockage

Prevention / Recommendations:

Frequent handwashing

Avoid crowded areas

Annual flu vaccination

3. Diabetes (Type 2)

Causes:

Insulin resistance

Obesity, sedentary lifestyle

Genetics

Symptoms:

Frequent urination and thirst

Fatigue, blurred vision

Slow-healing wounds, numbness

Diagnosis / Tests:

Fasting Blood Sugar (FBS)

HbA1c test

Oral Glucose Tolerance Test (OGTT)

Treatment Methods:

Lifestyle modifications: diet, exercise

Monitor blood sugar levels

Medications for blood sugar control

Medicines:

Metformin – first-line therapy

Glibenclamide / Glimepiride – oral hypoglycemic

Insulin – if oral medications insufficient

Prevention / Recommendations:

Maintain healthy weight

Balanced diet (low sugar, high fiber)

Regular exercise

Periodic blood sugar monitoring

4. Hypertension (High Blood Pressure)

Causes:

Genetics, obesity

Stress, high salt diet, sedentary lifestyle

Symptoms:

Often asymptomatic

Headache, dizziness

Shortness of breath in severe cases

Diagnosis / Tests:

Blood pressure measurement

Blood tests (Kidney function, Lipid profile)

ECG or Echocardiography if heart involvement suspected

Treatment Methods:

Lifestyle: reduce salt, exercise, stress management

Medication management

Medicines:

ACE inhibitors (Enalapril, Lisinopril)

Beta-blockers (Atenolol, Metoprolol)

Diuretics (Hydrochlorothiazide)

Prevention / Recommendations:

Healthy diet and regular exercise

Avoid smoking & alcohol

Regular BP checkups

5. Thyroid Disorders

Causes:

Autoimmune disease (Hashimoto’s, Graves’)

Iodine deficiency

Genetic factors

Symptoms:

Hypothyroidism: fatigue, weight gain, constipation, dry skin

Hyperthyroidism: weight loss, rapid heartbeat, sweating, anxiety

Diagnosis / Tests:

TSH, T3, T4 blood tests

Thyroid antibody tests

Treatment Methods:

Replace or suppress thyroid hormone as per type

Regular monitoring

Medicines:

Levothyroxine – hypothyroidism

Methimazole / Propylthiouracil – hyperthyroidism

Prevention / Recommendations:

Adequate iodine intake

Routine thyroid tests

6. Heart Disease

Causes:

Coronary artery disease, high cholesterol

Smoking, obesity, sedentary lifestyle

Diabetes, hypertension

Symptoms:

Chest pain, angina

Shortness of breath

Fatigue, palpitations

Diagnosis / Tests:

ECG, Echocardiography

Blood tests (Lipid profile, Troponin)

Stress test

Treatment Methods:

Medications to control BP, cholesterol

Surgery if severe (angioplasty, bypass)

Medicines:

Aspirin / Clopidogrel – prevent clots

Beta-blockers, ACE inhibitors

Statins (Atorvastatin, Rosuvastatin)

Prevention / Recommendations:

Healthy diet, exercise

Avoid tobacco & alcohol

Regular checkups

7. Cancer (General)

Causes:

Genetic mutations

Lifestyle factors (smoking, alcohol, poor diet)

Environmental exposure

Symptoms:

Unexplained weight loss

Persistent fatigue

Lumps, skin changes, unusual bleeding

Diagnosis / Tests:

Biopsy, imaging (CT, MRI, PET scan)

Blood markers (Tumor markers)

Treatment Methods:

Surgery, chemotherapy, radiotherapy

Targeted therapy

Pain & symptom management

Medicines:

Tamoxifen, Imatinib – targeted therapy

Morphine or analgesics – pain management

Prevention / Recommendations:

Avoid smoking & alcohol

Healthy diet & exercise

Regular screening (mammogram, colonoscopy, Pap test)

General Preventive Measures

Maintain personal hygiene

Balanced diet & hydration

Regular physical activity

Avoid smoking & alcohol

Timely vaccination

Regular medical checkups

FAQ Section

Q1. Which disease tests are most important?
Blood sugar, BP, thyroid, cholesterol, and regular health checkups help detect common diseases early.

Q2. Can medicines cure all diseases?
Medicines treat or manage symptoms; lifestyle & prevention are equally important.

Q3. How often should I do health screenings?
Adults should have annual checkups; specific tests may vary by age and risk factors.

 

Dr. Ahmed Ali Mollah
MBBS (DMC)FCGP (Medicine)C-Endos (Bardem)FRSH (London)
Gastroenterologist
19 Years of Experience Overall
BMDC Reg.: Coming Soon
ID: D30DB70

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