25. ūrustambha: A kind of disease of the thighs. Masculine. It is derived as “ūru + Stambh + Aṇ”, which means “paralyses the thighs”. This has been stated as “Now the ūrustambha shall be stated. The ūrustambha is four kinds namely viprakṛṣṭa, sannikṛṣṭa, nidāna and saṃgra. The features shall be stated. “It comprises of cold and hot watery content, is shall be dry and wet at a time. It shall be weary and non-weary. Although comprising of air, it shall still be having the effect of paralyzing. It shall make the thighs to not function and be in the state as it is. As it makes the thighs hard as a pillar and paralyzed, it is called as ūrustambha. it makes the one afflicted feel that the organ is unbelonging. it shall effect all the related parts of the leg. The word “Jīrṇājīrṇa” is to be understood in the sense of the food as being neither too hot nor too cold. Hence, it is stated as to have such food with diligence. This disease is also the effect of imbalance in Vāta, Pitta and śleṣma. This has been stated by Suśruta in Mahāvātavyādhi. The Prāgrūpa has been stated as: “it comprises of imbalance in attention and sleep. It also causes loss of taste.” The cure has been stated: “It is caused by the imbalance of vāta and also by imbalance of wetness. The leg is gravely affected by it. The paralyzing effect is felt immediately. The leg is aggrieved and the touch of cold is not felt. It shall be engrossed with the complications of the muscles”. The ūrustambha needs to be avoided with much care and balance of Vāta, Pitta and śleṣma. The cure to ūrustambha is stated in various texts.