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.
Doing the same thing over and over during the period of a day or participating in strenuous activity can both cause swelling in the fingers and hands as well. 9. Injury. Injury to the hand or fingers can cause swelling. This includes fractures, as well as cuts, burns and injuries to median or ulnar nerves. The brachial plexus nerve can also be a culprit when it comes to swollen fingers in the morning. 10. Other Cause. There are yet more causes of swollen fingers in the morning as well. Some medications can cause swelling in certain areas of the body as a side effect. Pseudo-gout, which is like gout and occurs when urea crystals accumulate in the joints, can cause swelling of those areas, which may cause swollen fingers in the morning.