Immunodeficiency diseases are conditions in which the immune system does not function properly, making individuals more vulnerable to infections and various illnesses.

Skin diseases are disorders that affect the skin and can include inflammation, infections, allergies, and changes in skin appearance such as acne, eczema, and psoriasis.

Pregnancy and fertility refer to processes related to reproduction, where pregnancy involves the development of a fetus in the mother's womb, and fertility pertains to the meeting of sperm and egg to form a new embryo.

Autoimmune diseases are conditions in which the immune system mistakenly attacks healthy tissues, causing inflammation and damage to various organs.

Gastrointestinal diseases refer to disorders that affect various parts of the digestive system and can lead to symptoms such as abdominal pain, indigestion, bloating, and changes in bowel habits.

Neurological disorders refer to a group of conditions that affect the central and peripheral nervous systems and can lead to issues such as motor weakness, cognitive impairments, and behavioral changes.

Endocrine disorders refer to conditions in which hormone-producing glands do not function properly, leading to hormonal imbalances and issues such as diabetes, hypothyroidism, or hyperthyroidism.

Infectious diseases are caused by microorganisms such as bacteria, viruses, fungi, and parasites, and they can be transmitted through direct contact, air, contaminated food, or water.

Rheumatologic diseases are disorders that affect the joints and connective tissues, typically causing inflammation, pain, and restricted movement, such as rheumatoid arthritis and systemic lupus erythematosus.

Blood disorders are conditions that affect blood components, such as red blood cells, white blood cells, platelets, or plasma, and may lead to anemia, clotting issues, or immune deficiencies.

Allergy and asthma are abnormal immune reactions that cause sensitivity to various substances and shortness of breath due to airway inflammation, respectively.

Genetic disorders refer to diseases caused by abnormal changes or mutations in genes, which can be inherited or occur spontaneously.