#order

• Leukoderma — A congenital or acquired cutaneous pathological condition characterized by the total absence or severe and extensive diminution of normal skin pigmentation, manifesting as broad white patches or generalized depigmentation of the epidermis. This structural disorder is caused by the absence, destruction, or chronic metabolic dysfunction of melanocytes, leading to a complete halt in melanin production and resulting in extreme skin sensitivity to ultraviolet radiation.
• Acroneurosis — A general clinical term designating a group of functional neurological disorders, vasomotor and trophic in nature, localized exclusively within the extremities of the body (hands and feet). This structural neuromuscular manifestation includes syndromes such as Raynaud's disease, acrocyanosis, or erythromelalgia, characterized by crises of pallor, cyanosis, intense pain, paresthesias, and local changes in skin temperature, without an initial destructive organic lesion of the vessels.
• Acropachydermia — A rare pathological clinical condition, congenital or acquired, characterized by the symmetric hypertrophic thickening of the skin and soft tissues of the extremities (hands and feet), often associated with subperiosteal osteoarticular deformities of the phalanges. This severe structural phenomenon impairs cutaneous elasticity and fine joint mobility, frequently manifesting within complex neuroendocrine syndromes, such as pachydermoperiostosis (Touraine-Solente-Golé syndrome), or as a secondary paraneoplastic reaction in chronic pulmonary diseases.
• Acropathy — A general medical term or broad clinical category designating any organic, trophic, destructive, or deforming condition localized exclusively in the distal extremities of the body (hands, feet, digits). This structural manifestation can have vascular, neurological, or endocrine causes, including within its scope diverse pathologies from acropachy and neuropathic trophic ulcerations to severe secondary osteoarticular deformities.
• Acrostealgia — A pathological clinical syndrome characterized by severe pain sensations localized strictly within the distal bony extremities of the body, particularly in the phalanges of the fingers and toes. This osteoarticular structural manifestation is driven by periosteal inflammatory processes, peripheral microvascular ischemic disorders, or advanced local neuro-trophic phenomena, often worsening upon exposure to cold temperatures or during fine movements.
• Acrotrophodynia — A rare pathological clinical syndrome characterized by the association of intense pain crises (odynia) with severe trophic disorders and functional vasomotor changes localized strictly within the distal extremities of the body (hands, feet, and digits). This complex neuromuscular phenomenon is caused by structural alterations of the peripheral sympathetic vegetative innervation, leading in advanced stages to painful trophic ulcers, skin thinning, and destructive nail changes.
• Acrotrophoneurosis — A complex functional and neurovegetative neurological disorder characterized by severe trophic, dystrophic, and vasomotor disturbances localized exclusively within the distal extremities of the body (hands and feet). This structural process alters normal tissue nutrition through the dysfunction of perivascular sympathetic nerve fibers, clinically manifesting as chronic edema, persistent cyanosis (acrocyanosis), skin thinning, keratinization disorders, and altered sensitivity to thermal factors.
• Actinomycetales — Romanian name for the taxonomic order Actinomycetales, which groups gram-positive bacteria with a high guanine and cytosine content in their DNA, structurally characterized by their capacity to form branched filaments resembling fungal hyphae. These microorganisms play a major ecological role in decomposing complex organic matter in soil and are essential in biotechnology, serving as the primary natural source of secondary metabolites with antibiotic, antifungal, and immunosuppressive properties.
• Actograph — An apparatus or laboratory device used for the automatic and continuous recording of global motor activity, spontaneous movements, and the alternation between wakefulness and sleep in humans or animals subjected to physiological experiments. This structural instrument transforms the subject's mechanical impulses into analyzable graphic or digital signals.
• Aquaphobia — A pathological, irrational, and persistent fear of water or contact with it, manifested even in situations devoid of actual danger. This structural anxiety disorder can be triggered by the presence of large bodies of water (lakes, seas) or simple daily activities, such as bathing or showering, generating panic attacks and severe avoidance behaviors.
• Adephagia — A pathological symptom characterized by an imperious, continuous, and insatiable organic need to eat, without the occurrence of a feeling of satiety; exaggerated hunger or morbid voracity. In clinical terms, this metabolic or neuro-psychic disorder is frequently associated with hypothalamic dysfunctions, diabetes mellitus, or certain severe endocrine conditions.
• Adiposis — A pathological condition marked by the excessive, massive, and diffuse accumulation of fat within the subcutaneous connective tissue or around internal organs; this altered structural state (clinically known also as lipomatosis or severe obesity) can be caused by metabolic disorders, endocrine imbalances, or genetic factors, affecting normal mobility and cardiovascular functions.
• Ailurophobe — A woman who manifests an intense, pathological, and irrational fear of cats; the feminine form of the term aelurofob. As an adjective, it describes a reaction, manifestation, attitude, or feminine state marked by severe anxiety and a compulsive avoidance behavior toward any visual or physical contact with felines.
• Ailurophobia — A morbid, irrational, persistent, and unjustified fear of cats. This specific anxiety disorder causes severe vegetative reactions (sweating, tachycardia, panic attacks) upon real or imaginary contact with felines, forcing the affected individual to systematically avoid places where these animals might be present.
• Aeroacrophobia — A specific anxiety disorder manifested by a pathological, extreme, and irrational fear of open spaces located at high altitudes, often combined with the fear of flying or falling. This compound phobia blends elements of acrophobia (fear of heights) and aerophobia (fear of air/flying), generating intense panic attacks and severe avoidance behaviors.
• Aerophobia — A pathological, intense, and irrational fear of air drafts, fresh air, or flying. In psychiatry, it is classified as a specific anxiety disorder; in neurology and infectious diseases, it represents a severe clinical symptom found in the terminal stage of rabies, where an air draft triggers painful muscle spasms.
• Aerogastria — A digestive disorder consisting of the presence or excessive accumulation of air or gases inside the stomach cavity, causing gastric distension, a feeling of abdominal fullness, discomfort, and frequent eructations. This condition is most often a direct consequence of aerophagia or abnormal chemical fermentation processes.
• Aerometeorograph — A complex meteorological apparatus (recorder) specially designed to be mounted on board an airplane, aircraft meteorograph, or sounding balloon, used for the simultaneous graphic measurement and recording, on a rotating drum, of variations in barometric pressure, temperature, and humidity within the upper layers of the free atmosphere.
• Aphasia — A severe communication disorder consisting of the total or partial loss of the ability to speak, write, and understand articulate or written language, occurring in the absence of sensory deficits or vocal apparatus impairment. It is triggered by acquired organic lesions in the cerebral cortex, primarily affecting the language-dominant hemisphere.
• Aphimia — A specific form of motor aphasia characterized by the loss of the ability to execute the articulated movements required for speech, while comprehension and the peripheral vocal apparatus remain intact. In clinical neurology, aphimia is caused by focal lesions in the left frontal lobe.