The arachnoid mater covering the brain is referred to as the arachnoidea encephali, and the portion covering the spinal cord as the arachnoidea spinalis.. The arachnoid and pia mater are sometimes considered as a single structure, the leptomeninx, or the plural version, leptomeninges. (Lepto- from the Greek root meaning thin). Similarly, the dura in this situation is called the pachymeninx.
Sweaty Hands Excessively sweaty hands are caused by the condition known as hyperhidrosis. Palmer (palm of the hand) hyperhidrosis is caused by a hyperactive sympathetic nervous system causing sweat glands in the hands to produce an excessive quantity of sweat.
Finger spasm: Introduction. Finger spasm: Sudden involuntary contraction of the muscles in the fingers. See detailed information below for a list of 18 causes of Finger spasm, Symptom Checker, including diseases and drug side effect causes.Â» Review Causes of Finger spasm: Causes | Symptom Checker Â».he following medical conditions are some of the possible causes of Finger spasm. There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Muscle injury. 2  Nerve irritation. 3  Nummular eczema. 4  Nerve compression. 5  Hypocalcaemia. 6  Electrolyte abnormality. 7  Spinal damage.