# You have a strange feeling for a moment then it passes
You have a strange feeling for a moment, then it passes.

This message is produced by reading any of five scrolls or drinking either of two potions while you are a beginner:
scrolls
scroll of destroy armor - if you are not wearing any armor.
scroll of enchant armor - if you are not wearing any armor.
scroll of enchant weapon - if you are not wielding a weapon.
scroll of food detection - if there is no food on the level if blessed/uncursed or potions if cursed and/or confused.
scroll of gold detection - if there is no gold on the level if blessed/uncursed or traps if cursed and/or confused.
potions
potion of object detection - if there are no objects on the level.
potion of monster detection - if there are no monsters on the level.
This message is also produced for the corresponding spells.
Furthermore, the message also be produced by:

Curing temporary blindness while polymorphed into a form without eyes.
Being inflicted with temporary blindness while polymorphed into a form without eyes and wearing The Eyes of the Overworld.
If you are hallucinating, the message will instead read "You have a normal feeling for a moment, then it passes."
The message output is generated by a call to the function strange_feeling() in potion.c.[1]

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It may contain text specific to NetHack 3.6.1. Information on this page may be out of date.
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References

↑ src/potion.c in NetHack 3.6.1, line 1151: The function strange_feeling()