The Varieties of Contemplative Experience study identified more than 50 types of meditation-related challenging experiences across seven domains.

Evidence

The varieties of contemplative experience: A mixed-methods … (NIH / PMC)

corroborated: 2 independent passages support this claim
XREF: connects to: Mindlessness leads to panic and detrimental behavior. — Dan Harris, 10 percent Happier, 40; Meditation practice in MBPs is associated with transient distress and negative impacts at similar rates to other psychological treatments. — Defining and measuring meditation-related adverse effects in …; Meditation can lead to continual self-improvement and exploration. — Dan Harris, 10 percent Happier, 1100 (+1 more)

Meditation practice in MBPs is associated with transient distress and negative impacts at similar rates to other psychological treatments. (similarity 0.82)
Meditation and mindfulness, widely perceived as stress-reduction techniques, can also have adverse effects. (similarity 0.79)
58% of 96 participants reported at least one meditation-related adverse effect, ranging from perpetual hypersensitivity to nightmares. (similarity 0.78)
Studies have described adverse events such as anxiety, pain, and psychosis associated with mindfulness meditation. (similarity 0.78)
Recent studies reveal that 25–87% of those who engage in meditation report adverse effects, with 3–37% experiencing functional impairment. (similarity 0.78)