Palmar erythema is reddening of the palms at the thenar and hypothenar eminences. The most superficial muscle in the thenar group is the abductor pollicis brevis. The thumb has one long flexor and a short flexor in the thenar muscle group. Both involve a less developed first metacarpal and a nearly absent thenar musculature. It supplies sensory innervation to the thenar eminence of the palm and the central palm. The association between the thenar muscle atrophy and compression was noted in 1914. Common sites for peripheral NIRS monitoring include the thenar eminence, forearm and calf muscles. Decreased sensation over the thenar eminence can be due to median nerve injury. It also supplies the muscles of the thenar eminence by a recurrent thenar branch. It is one of three thenar muscles. The palm consist of two elongated central pads, a hypothenar pad and a thenar pad. Arumugam and Thenar Mozhi Ammal are the other deities located in this temple complex.