Medical Conditions: Symptoms, Causes, and Treatments
Depression: Causes and Symptoms
Common Causes of Depression
- Stress and emotional problems: Family issues, job pressure, failure, or loneliness can cause depression.
- Chemical imbalance in the brain: Low levels of serotonin and other brain chemicals may lead to depression.
- Genetic factors: Depression may occur in people with a family history of mental illness.
- Chronic diseases: Diseases like cancer, diabetes, or heart disease may increase the risk of depression.
Recognizing Symptoms
- Persistent sadness and crying
- Loss of interest in work and hobbies
- Sleep disturbances
- Fatigue and weakness
- Poor concentration
- Loss of appetite
- Feeling hopeless or guilty
Understanding the Four Phases of Migraine
1. Prodrome Phase
This phase occurs before the headache begins.
Symptoms include:
- Mood changes
- Tiredness
- Food cravings
- Irritability
2. Aura Phase
Some patients experience an aura before the headache starts.
Symptoms:
- Flashing lights
- Blurred vision
- Tingling sensation
- Difficulty speaking
3. Headache Phase
This is the main phase of a migraine.
Symptoms:
- Severe throbbing headache
- Nausea and vomiting
- Sensitivity to light and sound
4. Postdrome Phase
This occurs after the headache ends.
Symptoms:
- Weakness
- Tiredness
- Difficulty concentrating
Types of Anaemia and Their Characteristics
- Megaloblastic: Caused by a deficiency of Vitamin B12.
- Iron deficiency: Occurs due to a lack of iron in the body.
- Nutritional anaemia: Caused by a deficiency of nutrients like iron, B12, and folic acid, etc.
- Hypochromic: A type of anaemia in which red blood cells have less haemoglobin and become pale in colour.
- Sickle cell: A hereditary disease in which RBCs become sickle-shaped.
- Aplastic: Bone marrow fails to produce enough blood cells.
- Hemolytic: RBCs are destroyed faster than they are produced.
Antiepileptic Drugs: Management and Uses
Definition
Antiepileptic drugs are medicines used to prevent and control seizures in epilepsy.
Common Drugs
- Phenytoin
- Carbamazepine
- Sodium valproate
- Diazepam
Mechanism of Action
These drugs reduce abnormal electrical activity in the brain.
Clinical Uses
- Epilepsy
- Seizures
- Status epilepticus
Side Effects
- Drowsiness
- Dizziness
- Nausea
- Gum hypertrophy (specifically with phenytoin)
Nursing Management
- Ensure the patient takes medicines regularly.
- Advise the patient to avoid alcohol.
- Do not stop medicine suddenly.
Malaria: Transmission and Pathophysiology
Malaria is a life-threatening, mosquito-borne disease caused by a malarial parasite. Malaria happens when a mosquito carrying the Plasmodium parasite bites a human.
Humans can be infected by four types of malaria parasites: P. vivax, P. falciparum, P. malariae, and P. ovale. Malaria spreads through the bite of an infected female Anopheles mosquito. When the mosquito bites, it introduces the parasite into the person’s blood through its saliva. The parasites reach the liver, where they mature and reproduce.
Classification of Pneumonia Types
- a) Bacterial: Caused by bacteria such as Streptococcus pneumoniae.
- b) Viral: Caused by viruses like the influenza virus.
- c) Fungal: Caused by fungi and commonly seen in immunocompromised patients.
- d) Aspiration: Occurs when food, liquid, or vomit enters the lungs.
- e) Community-acquired: Develops outside hospitals or healthcare settings.
- f) Hospital-acquired: Occurs during a hospital stay due to hospital-acquired infections.
Alzheimer’s Disease: Symptoms and Care
Alzheimer’s disease is a progressive brain disorder that causes memory loss and confusion.
Causes
- Aging
- Genetic factors
- Degeneration of brain cells
- Low levels of acetylcholine in the brain
- Head injury and an unhealthy lifestyle
Symptoms
- Memory loss, confusion, and forgetfulness
- Difficulty in speaking and understanding
- Mood and behaviour changes
- Difficulty in performing daily activities
- Poor judgment
Pharmacological Treatment
Drugs used to improve memory and brain function include Donepezil and Memantine.
Non-Pharmacological Treatment
- Mental exercise and memory training
- Regular physical exercise
- Maintaining a safe and calm environment
Parkinson’s Disease: Causes and Management
Causes
- Loss of dopaminergic neurons in the substantia nigra of the brain.
- Deficiency of dopamine and increased acetylcholine at the synapse.
- The exact cause is unknown.
- Genetic factors may play a role.
Symptoms
- Tremors
- Bradykinesia
- Muscle rigidity
- Excessive salivation
- Mood changes
Non-Pharmacological Treatment
- Providing psychological help to the patient.
- Lifestyle modifications.
- Counselling of the patient.
- Eating a well-balanced diet.
- Exercise and physical therapy.
Pharmacological Treatment
- Drugs that increase dopamine levels.
- Drugs that release dopamine (e.g., Amantadine).
- COMT inhibitors (e.g., Tolcapone).
- Anticholinergics (e.g., Benztropine).
Pathophysiology of Peptic Ulcers
- Normally, the stomach is protected by a mucus layer.
- Excess secretion of hydrochloric acid and pepsin damages the stomach lining.
- Helicobacter pylori infection weakens the protective mucosal barrier.
- NSAIDs, smoking, alcohol, and stress further increase damage.
- The mucosal lining gets eroded, and ulcer formation occurs.
- This causes pain, inflammation, and bleeding in severe cases.
Pharmacological Management
- Antacids: Neutralize stomach acid.
- Proton pump inhibitors: Omeprazole, Pantoprazole.
- H2 receptor blockers: Ranitidine, Famotidine.
- Antibiotics: Used to treat H. pylori infection.
- Mucosal protective agents: Sucralfate.
Non-Pharmacological Management
- Avoid spicy and oily food.
- Stop smoking and alcohol consumption.
- Eat a balanced diet.
- Reduce stress.
- Take adequate rest.
- Avoid long-term NSAID use.
Tuberculosis: Causes, Symptoms, and Treatment
Causes of Tuberculosis
- Infection by Mycobacterium tuberculosis bacteria.
- Spread through air droplets during coughing and sneezing.
- Weak immune system.
- Malnutrition and poor hygiene.
- Overcrowded living conditions.
- Smoking and alcohol consumption.
Symptoms
- Persistent cough for more than two weeks
- Fever and night sweating
- Weight loss
- Chest pain
- Blood in sputum
- Weakness and fatigue
Pharmacological Treatment
Commonly used drugs include:
- Isoniazid
- Rifampicin
- Pyrazinamide
- Ethambutol
Non-Pharmacological Treatment
- Maintain a balanced diet.
- Ensure adequate rest.
- Maintain hygiene.
- Cover the mouth while coughing.
- Avoid smoking and alcohol.
- Complete the full course of treatment.
Pathophysiology of HIV and AIDS
- HIV enters the body through infected blood, unprotected sexual contact, contaminated needles, or from an infected mother to her baby.
- The virus mainly attacks CD4 T-helper lymphocyte cells, which are vital for body immunity.
- HIV enters these cells, multiplies rapidly, and destroys them.
- Gradually, the number of CD4 cells decreases, and the immune system becomes weak.
- Due to low immunity, the body becomes unable to fight against infections and diseases.
- Opportunistic infections such as tuberculosis, pneumonia, and fungal infections occur frequently.
- In the advanced stage, severe infections, weight loss, and certain cancers develop, leading to AIDS.