| A | B |
| Lymphedema | Edema caused by accumulation of lymph fluid faster than it can be drained from body tissue. |
| Edema | Swelling caused by fluid accumulation. |
| Primary Lymphedema | Rare inherited or congenital disorder caused by abnormal development of the lymphatic system. |
| Secondary Lymphedema | Lymphedema caused by surgery, radiation, trauma, or obstruction of the lymphatic system. |
| Lymphadenitis | Inflammation and swelling of one or more lymph nodes, often near an infection site. |
| Splenomegaly | Enlargement of the spleen. |
| Lymphadenopathy | Abnormal size, number, or consistency of lymph nodes. |
| Lymphangioma | Benign malformation of lymphatic vessels; often forms under the skin of infants. |
| Tonsillitis | Inflammation of the tonsils. |
| Strep Throat | Specific form of tonsillitis and pharyngitis caused by group A streptococcus. |
| Pharyngitis | Inflammation of the pharynx. |
| Hypersplenism | Condition in which an enlarged spleen destroys too many blood cells. |
| Anemia | Deficiency of erythrocytes or hemoglobin. |
| Leukopenia | Deficiency of white blood cells. |
| Thrombocytopenia | Deficiency of platelets. |
| Asplenia | Absence, nonfunction, or surgical removal of the spleen; causes higher risk of severe bacterial infection. |
| Fever | Temporary increase in body temperature, often in response to infection. |
| Pyrexia | Another term for fever. |
| Malaise | General feeling of fatigue, weakness, or discomfort. |
| Rash | Abnormal change in skin appearance or texture, often linked to allergy or irritation. |
| Urticaria | Itchy raised welts associated with allergic reactions. |
| Inflammation | Body defense response to tissue damage, infection, or irritation; redness, swelling, heat and pain. |
| Infectious Diseases | Diseases caused by pathogenic organisms. |
| Pathogen | Disease-causing organism. |
| Sepsis | Severe body-wide inflammatory response to infection causing tissue damage and organ failure. |
| Allergy | Hypersensitivity reaction to an allergen (immune system reacts excessively to a harmless substance). |
| Allergen | Foreign substance causing an allergic reaction. |
| Allergic Rhinitis / Hay Fever | Allergic reaction causing nasal inflammation and sneezing. |
| Anaphylaxis | Severe potentially life-threatening allergic reaction; edema of the larynx and a sudden drop in blood pressure. |
| Epinephrine | Medication used to treat anaphylaxis. |
| Autoimmune Disorders | Conditions in which the immune system attacks healthy body tissues. |
| Systemic Lupus Erythematosus (SLE) | Autoimmune disease causing joint pain, edema, fatigue, fever, and a butterfly-shaped rash. |
| Immunodeficiency | Condition in which immune response is reduced or absent due to congenital factors or external causes. |
| Primary Immunodeficiency | Congenital or genetic immune deficiency. |
| Secondary Immunodeficiency | Immune deficiency caused by disease, medication, or malnutrition. |
| Human Immunodeficiency Virus (HIV) | Virus that weakens the immune system. |
| Erythrocyte Sedimentation Rate (ESR) | Test measuring inflammation by measuring the rate at which red blood cells settle. |
| Antibody Testing | Testing used to detect antibodies in the blood; identifies past infection or autoimmune disease. |
| Rapid Strep Test | Throat swab test for quickly detecting group A streptococcus. |
| Lymphangiography | Imaging of lymph vessels after injecting contrast dye to identify blockages |
| Allergy Testing | Testing used to identify hypersensitivities. |
| Skin Prick Test | Allergy test exposing skin to allergens for immediate hypersensitivity reactions. |
| Patch Test | Allergy test checking delayed allergic reactions like dermatitis. |
| Palpation | Physical examination using hands or fingers to assess organs or tissues (such as lymph node size and tenderness). |
| Antibiotics | Drugs that kill or inhibit bacteria. |
| Antiviral | Drug that suppresses viral replication. |
| Anti-inflammatory | Drug that reduces inflammation, fever, and pain. |
| Corticosteroids | Steroid-based anti-inflammatory drugs. |
| NSAIDs | Non-steroidal anti-inflammatory drugs. |
| Antihistamine | Drug that blocks the effects of histamine to reduce allergy symptoms. |
| Histamine | Chemical responsible for allergy symptoms. |
| Vaccine | Substance providing active immunity against infectious disease; exposes the body to antigens safely or in a controlled way. |
| Immunoglobulin Therapy (IVIG) | Infusion of donated antibodies to boost immune function in immunocompromised patients. |
| Lymphatic Drainage Massage | Gentle massage technique promoting lymph flow and reducing swelling. |
| Compression Therapy | Use of pressure garments or bandaging to promote lymph drainage. |
| Sclerotherapy | Injection procedure causing scarring and shrinkage of a lesion such as a lymphangioma. |
| Allergy Desensitization/ Hyposensitization | Treatment exposing patients to small allergen doses to reduce future reactions. |