Positives

• Brain-stimulation devices such as transcranial direct current stimulation (tDCS) come up when patients are looking for noninvasive options for post-COVID cognitive symptoms, though most Long COVID-specific use still happens inside research or specialist settings Reddit.

Negatives

• Long COVID patients on tDCS combined with cognitive training in the NIH RECOVER-NEURO cohort saw no significant benefit on fatigue, post-COVID symptoms, anxiety, depression, quality of life, or cognitive tests over 10 weeks compared with sham Psychiatrist.com.
• Roughly half of patients on tDCS report side effects including headaches, burning or tingling, itching, mild burns, or skin irritation under the electrode pads The Brain Stimulator.

Hurdles & Side Effects

• Access is one of the biggest practical barriers, since most programs are clinical trials or specialist-run and rarely available over the counter Reddit.