AH Full Form in Medical term is Ataxic Hemiparesis. When any pyramidal tract syndrome and a homolateral ataxic syndrome coexist, the result is ataxic hemiparesis (AH). First described in 1965, the hallmark symptoms of AH include unilateral weakness and pyramidal signs together with ipsilateral cerebellar-like ataxia; they were further upon by Fisher and Cole (1965).
But newer findings have broadened the clinical range of AH to include individuals with persistent hemisensory abnormalities and other symptoms including dysarthria or facial paresis. Aneurysms and hydrocephalus (AH) were first identified as a lacunar condition associated with lacunar infarctions.
Causes of AH
A number of investigations have shown that AH can be caused by cardioembolic and large-artery atherosclerosis, as well as lacunar infarction, however current data imply that AH is not significantly connected with these infarctions.
Also, AH has been linked to things like tumors, infections, head injuries, and demyelinating illnesses. Most AH lesions are found in the thalamus, internal capsule, pons, and corona radiata, but cortical lesions have been seen in a small percentage of patients.
Variations in symptomatology reflect the magnitude and precise position of the infarct lesion, and specific AH symptoms are hypothesized to come from damage to the corticospinal & cerebellar pathways.