1) Agnosia 2) Tactile agnosia 
Astereognosis (or tactile agnosia if only one hand is affected) is the inability to identify an object by active touch of the hands without other sensory input. An individual with astereognosis is unable to identify objects by handling them, despite intact sensation. With the absence of vision (i.e. eyes closed), an individual with astereognosis i...
Synonym: tactile agnosia. ... Origin: G. A-priv. + stereos, solid + gnosis, knowledge ... (05 Mar 2000) ... 
(ә-ster″e-og-no´sis) loss or lack of the ability to understand the form and nature of objects that are touched (stereognosis), a form of tactile agnosia.
Inability to recognize familiar objects by touch that cannot be explained by a defect of elementary
Type: Term Pronunciation: ă-stēr′ē-og-nō′sis Synonyms: tactile agnosia
astereognosis 1. The inability to determine the form of an object by touch. 2. Loss of the ability to recognize the shapes of objects by handling them; tactile agnosia. 3. The inability to recognize familiar objects by touch that cannot be explained by a defect of elementary tactile sensation.
tactile agnosia noun a loss of the ability to recognize objects by handling them
the inability to determine the shape of an object by touching or feeling it.