While I know that excimer lasers are used for psoriasis, are low level laser treatments done outpatient for hair loss effective for psoriasis?

Uncertain. Laser dermatologists would be able to answer this question better. Low level laser therapy does not seem to do much in other fields despite the claims. We tried it in rheumatology and did not find much benefit for rheumatoid arthritis.
Hair loss. Excimer lasers have been used to treat a form of hair loss called alopecia areata but not to treat male pattern hair loss. The best treatments for male pattern hair loss are rogaine (minoxidil) for men which is topical and the oral medication propecia.

Related Questions

Low level laser therapy for hair loss mpb? What range do they use in this treatment? Will a 660 nw diode comb work for this? Red laser. How effective?

LLLT work on some. No guarantee on who. But typically the earlier you treat the better, and it is a lifelong commitment, so if it works you need to keep using it. Red is best, and the question is the energy provided and for how long.

Is low level laser therapy effective for hair loss? If so, is it effective for a receding hair line?

Hair loss. The hairmax lasercomb produces nine laser beams which generate columnated, coherent visible light in the red spectrum. Laser light in the red spectrum and with the appropriate power output has been clinically proven to be beneficial for haiti loss. Rogaine (minoxidil) for men and the oral medication Propecia are more effective than the lasercomb.
Not really. I know the laser comb has some sort of clinical evidence that it works, but every one of my patients who has tried it has told me nothing has happened. Your dermatologist can prescribe a tablet that actually works.