Rheumatic fever is an inflammatory disease that can develop as a complication of untreated or poorly treated strep throat or scarlet fever, which are caused by Streptococcus bacteria.
It is most common in children aged 5 to 15 years, though it can occur in younger children and adults. While rare in developed countries, rheumatic fever remains prevalent in many developing nations.
The disease can cause permanent heart damage, including valve damage and heart failure, if not addressed promptly. Early treatment reduces inflammation, manages symptoms, and prevents recurrence.
Fever
Painful, tender joints, often in knees, ankles, elbows, and wrists
Migratory joint pain (pain moves from one joint to another)
Red, hot, or swollen joints
Small, painless nodules under the skin
Chest pain
Heart murmur
Fatigue
Flat or slightly raised, painless rash with ragged edges (erythema marginatum)
If untreated or recurrent, rheumatic fever can lead to:
Rheumatic heart disease (permanent damage to heart valves)
Heart failure due to valve damage or chronic inflammation
Arrhythmias (abnormal heart rhythms)
Chronic joint pain and arthritis
Neurological complications, including Sydenham’s chorea (involuntary movements)
Management of rheumatic fever focuses on reducing inflammation, treating infection, and preventing recurrence:
Antibiotics
To eradicate Streptococcus bacteria (e.g., penicillin)
Long-term prophylaxis may be needed to prevent recurrence
Anti-inflammatory medications
Aspirin or corticosteroids to reduce joint and heart inflammation
Supportive care
Bed rest during acute illness
Monitoring for heart complications
Management of complications
Valve repair or replacement in severe cases of rheumatic heart disease
Early diagnosis and treatment are essential to prevent permanent heart damage and improve long-term outcomes.
Scarlet fever, also called scarlatina, is a bacterial infection caused by group A Streptococcus (the same bacteria that cause strep throat). It mainly affects children 5 to 15 years old.
The hallmark of scarlet fever is a bright red, sandpaper-like rash, usually accompanied by:
Sore throat
High fever
Although once considered a serious childhood illness, modern antibiotics have greatly reduced its risks. Untreated scarlet fever, however, can lead to serious complications affecting the heart, kidneys, or other organs.
Red rash that feels like sandpaper, usually starting on the chest and spreading
Red lines: folds of skin (groin, armpits, elbows, knees, neck) become deeper red
Flushed face with a pale ring around the mouth
Strawberry tongue: red, bumpy tongue, often with a white coating initially
High fever (101°F / 38.3°C or higher) with chills
Severely sore throat with white or yellowish patches
Difficulty swallowing
Tender, enlarged lymph nodes in the neck
Nausea or vomiting
Headache
If untreated, scarlet fever can lead to:
Rheumatic fever → may damage heart valves
Post-streptococcal glomerulonephritis → kidney inflammation
Ear infections
Sinus infections
Pneumonia or other systemic infections
Skin peeling: after the rash fades, particularly on fingers and toes
Antibiotics
Penicillin or amoxicillin are most commonly prescribed
Early treatment reduces the risk of complications and shortens illness duration
Symptomatic Care
Fever and pain relief: acetaminophen or ibuprofen
Hydration and rest
Soothing throat: warm liquids, soft foods, or throat lozenges
Monitoring & Prevention
Keep child home from school until 24 hours after starting antibiotics
Avoid contact with others to prevent spread
Tetanus is a serious disease caused by a bacterial toxin from Clostridium tetani that affects the nervous system. It leads to painful muscle contractions, particularly in the jaw and neck, and can interfere with breathing, posing a life-threatening risk.
Thanks to the tetanus vaccine, cases are rare in developed countries, but the disease remains a risk for those not up to date on vaccinations, especially in developing regions.
There is no cure for tetanus; treatment focuses on managing complications until the effects of the toxin subside.
Symptoms usually appear a few days to several weeks after the bacteria enter a wound (average 7–10 days). Common signs include:
Jaw muscle spasms and stiffness (trismus)
Neck stiffness
Difficulty swallowing
Stiffness of abdominal muscles
Painful body spasms lasting several minutes, often triggered by minor stimuli like drafts, noise, touch, or light
Fever
Sweating
Elevated blood pressure
If left untreated, tetanus can lead to:
Severe muscle spasms and rigidity throughout the body
Fractures from intense muscle contractions
Respiratory failure due to chest muscle involvement
Autonomic dysfunction (high blood pressure, irregular heart rate, excessive sweating)
Death, particularly in older adults or unvaccinated individuals
1. Hospitalization and Supportive Care:
Intensive monitoring for breathing and heart function
Mechanical ventilation if breathing is compromised
2. Medications:
Tetanus immune globulin (TIG) to neutralize toxin
Antibiotics (like metronidazole) to stop bacterial growth
Muscle relaxants or sedatives to reduce spasms
3. Wound Care:
Thorough cleaning and removal of contaminated tissue
4. Vaccination:
Tetanus vaccine booster for prevention and to reduce severity
5. Long-term Recovery:
Rehabilitation for muscle weakness or joint stiffness
Tuberculosis (TB) is a potentially serious infectious disease primarily affecting the lungs, although it can affect other parts of the body.
TB is caused by the bacterium Mycobacterium tuberculosis.
It spreads through airborne droplets when an infected person coughs, sneezes, or talks.
People infected with TB bacteria may not show symptoms (latent TB) but can develop active TB later.
Untreated TB can be fatal, and some strains are resistant to common antibiotics.
Effective treatment involves taking multiple medications for several months to fully eradicate the infection and prevent drug resistance.
Signs of active TB include:
Persistent cough, sometimes with blood
Chest pain or discomfort when breathing or coughing
Unintentional weight loss
Fatigue and general weakness
Fever
Night sweats
Chills
Loss of appetite
Spread of infection to other organs (e.g., kidneys, spine, brain)
Lung damage and chronic respiratory problems
Development of drug-resistant TB if treatment is incomplete
Severe illness or death if left untreated
Antibiotic Therapy:
Typically involves multiple antibiotics taken for 6–12 months
Common drugs: isoniazid, rifampin, ethambutol, pyrazinamide
Monitoring and Support:
Regular follow-ups to ensure adherence to medication
Supportive care for nutrition, hydration, and symptom relief
Preventive Measures:
Screening and preventive treatment for latent TB
Vaccination with BCG (in some countries)
Infection control to prevent spread
Nausea is the uneasy sensation of wanting to vomit, while vomiting is the forceful expulsion of stomach contents through the mouth.
These are symptoms, not diseases, and can be acute (short-term) or recurrent depending on the cause.
Recurrent vomiting may indicate underlying medical conditions, and frequent vomiting can lead to dehydration, which can be dangerous if untreated.
Vomiting is the body’s natural response to remove harmful substances from the stomach or react to gastrointestinal irritation.
Gastroenteritis (bacterial or viral gut infection) is one of the most common causes in adults and typically resolves in a few days.
Infections: gastroenteritis, influenza, food poisoning
Indigestion or overeating
Motion sickness
Pregnancy (morning sickness)
Side effects of medications or toxins
Abdominal pain or cramping
Diarrhea
Fever
Lightheadedness or vertigo
Rapid pulse
Excessive sweating
Dry mouth and decreased urination
Chest pain or fainting
Confusion or excessive sleepiness
Vomiting blood in severe cases
Hydration: Drink small sips of water or oral rehydration solutions
Diet: Eat bland foods like toast, rice, or bananas when tolerable
Rest: Avoid strenuous activity
Medications: Anti-nausea medications like ondansetron or metoclopramide
Treat underlying causes: Antibiotics for bacterial infections, or managing motion sickness and pregnancy-related nausea
Seek urgent care if vomiting persists, blood is present, or signs of severe dehydration appear
Yellow fever is a viral infection transmitted by a specific type of mosquito.
Mild cases may cause fever, headache, nausea, and vomiting.
Severe cases can affect the heart, liver, and kidneys, cause bleeding (hemorrhage), and can be fatal—up to 50% mortality in severe forms.
There is no specific treatment, but vaccination before traveling to endemic areas provides protection.
Incubation Period (3–6 days)
Usually no symptoms during this phase.
Acute Phase
Signs and symptoms may include:
Fever
Headache
Muscle aches (especially back and knees)
Sensitivity to light
Nausea and/or vomiting
Loss of appetite
Dizziness
Red eyes, face, or tongue
Toxic Phase (Severe Cases)
May include organ failure, bleeding, and can be life-threatening.
Vaccination is the most effective prevention.
Supportive care for symptoms: hydration, rest, and treatment of complications.
Avoid mosquito bites through repellents, protective clothing, and nets.
Pneumonia is an infection that inflames the air sacs (alveoli) in one or both lungs. The alveoli may fill with fluid or pus, leading to symptoms such as cough with phlegm, fever, chills, and difficulty breathing.
Pneumonia can be caused by bacteria, viruses, or fungi, and its severity can range from mild to life-threatening. It is particularly serious for:
Infants and young children
Adults over 65 years old
People with chronic health conditions or weakened immune systems
Prompt treatment is critical to prevent complications and improve recovery.
Chest pain when breathing or coughing
Cough, which may produce phlegm or pus
Shortness of breath
Fatigue and weakness
Fever, sweating, and shaking chills
Lower than normal body temperature (in older adults or immunocompromised individuals)
Confusion or changes in mental awareness (especially in adults 65+)
Nausea, vomiting, or diarrhea
Difficulty breathing, which can become severe and require hospitalization
Spread of infection to the bloodstream (sepsis)
Lung abscesses or areas of permanent lung damage
Exacerbation of pre-existing conditions, such as asthma, COPD, or heart disease
Long recovery periods and reduced ability to perform daily activities
Death in severe cases, especially among high-risk groups
1. Medications:
Antibiotics for bacterial pneumonia
Antiviral medications for viral pneumonia (in certain cases)
Antifungal drugs for fungal pneumonia
Fever reducers and pain relievers (e.g., acetaminophen or ibuprofen)
2. Supportive Care:
Rest to allow the body to fight infection
Plenty of fluids to stay hydrated
Oxygen therapy if blood oxygen levels are low
Hospitalization for severe cases, especially in high-risk patients
3. Preventive Measures:
Vaccination against pneumonia-causing bacteria and influenza
Good hygiene practices (handwashing, avoiding close contact with sick individuals)
Quitting smoking to improve lung health