Sometimes they felt diseased from their separation from Krsna, and being so greatly disappointed, they were aimlessly wandering on the banks of the Yamuna

Expressions researched:
"Sometimes they felt diseased from their separation from Krsna, and being so greatly disappointed, they were aimlessly wandering on the banks of the Yamuna"

Nectar of Devotion

He informed Kṛṣṇa that all the cowherd boys residing in Vṛndāvana were as still as the trees at the tops of hills. Sometimes they felt diseased from their separation from Kṛṣṇa, and being so greatly disappointed, they were aimlessly wandering on the banks of the Yamunā.

Nectar of Devotion 42:

An example of stillness was described by a friend of Kṛṣṇa's who informed Him in Mathurā that all the cowherd boys had become just like leafless trees on the tops of hills. They appeared almost naked, being skinny and frail, and did not carry any fruits or flowers. He informed Kṛṣṇa that all the cowherd boys residing in Vṛndāvana were as still as the trees at the tops of hills. Sometimes they felt diseased from their separation from Kṛṣṇa, and being so greatly disappointed, they were aimlessly wandering on the banks of the Yamunā.

There is also an example of madness caused by separation from Kṛṣṇa. When Kṛṣṇa was absent from Vṛndāvana, all the cowherd boys became bewildered, and having given up all kinds of activities, they appeared to be mad and forgot all their regular business. They were sometimes lying down on the ground, sometimes rolling in the dust, sometimes laughing and sometimes running very swiftly. All of these symptoms gave them the appearance of madmen. One friend of Kṛṣṇa's criticized Him by saying, "My dear Lord, You have become the King of Mathurā after killing Kaṁsa, and that is very good news for us. But at Vṛndāvana all the residents have become blind from their continuous crying over Your absence. They are full only of anxieties and are not cheered at all by Your becoming the King of Mathurā."