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Echophenomenon (also known as echo phenomenon; from Ancient Greek ἠχώ (ēkhṓ) "echo, reflected sound") is "automatic imitative actions without explicit awareness" [1] or pathological repetitions of external stimuli or activities, actions, sounds, or phrases, indicative of an underlying disorder. [2] [3] The echophenomena include ...
Echopraxia is a typical symptom of Tourette syndrome but causes are not well elucidated. [1]Frontal lobe animation. One theoretical cause subject to ongoing debate surrounds the role of the mirror neuron system (MNS), a group of neurons in the inferior frontal gyrus (F5 region) of the brain that may influence imitative behaviors, [1] but no widely accepted neural or computational models have ...
[6] [7] Although these tumors are relatively common, they only rarely cause Kasabach–Merritt syndrome. [citation needed] When these tumors are large or are growing rapidly, sometimes they can trap platelets, causing severe thrombocytopenia. The combination of vascular tumor and consumptive thrombocytopenia defines Kasabach–Merritt syndrome.
Echolalia is common in young children who are first learning to speak. Echolalia is a form of imitation. Imitation is a useful, normal and necessary component of social learning : imitative learning occurs when the "observer acquires new behaviors through imitation" and mimicry or automatic imitation occurs when a "reenacted behavior is based ...
Echogenicity (sometimes as echogenecity) or echogeneity is the ability to bounce an echo, e.g. return the signal in medical ultrasound examinations. In other words, echogenicity is higher when the surface bouncing the sound echo reflects increased sound waves.
Trousseau described several cases in which recurrent thrombosis was the presenting feature of visceral cancer, and his confidence in the utility of this connection led him to say, "So great, in my opinion, is the semiotic value of phlegmasia in the cancerous cachexia, that I regard this phlegmasia as a sign of the cancerous diathesis as certain ...
Some symptoms in adults are specific to the location of the tumor: Tumors in the cerebrum, which controls movement, may cause weakness or numbness to the body. This weakness is often limited to one side of the body. Tumors in the Broca's area of the cerebrum can cause speech difficulties. In extreme cases, the patient may have problems ...
Cancer symptoms are changes in the body caused by the presence of cancer. They are usually caused by the effect of a cancer on the part of the body where it is growing, although the disease can cause more general symptoms such as weight loss or tiredness. There are more than 100 different types of cancer with a wide range of signs and symptoms ...