Late-winter SAD can spike anxiety. Modify light therapy and timing.

Yes, SAD in late winter often amplifies existing anxiety disorders, and the standard treatment—morning bright light—can actually backfire if you have panic or generalized anxiety.

Late winter is tricky because your body has been running on low light for months. The cumulative effect can crater your energy while anxiety keeps your nervous system on edge. You get this weird combo: you want to hibernate but can’t stop worrying. Anticipating spring can also stir up social anxiety or performance pressure (“I should be doing better by now”).

Standard light therapy (10,000 lux, 30 minutes upon waking) works for depression but can trigger jitteriness, agitation, or even panic in people prone to