How do you counsel patients with alopecia on the timing of response and what sort of outcomes they should expect with JAK inhibitors?

The timing of responses to treatment with JAK inhibitors in alopecia areata can be quite variable, although they typically take at least a few months at the minimum. Some patients can notice a substantial response by 3 months of treatment, but that's more the exception than the rule. When I counsel patients, I usually discuss that we will re-evaluate treatment after 6 months, but that responses can often take longer than that – some people can even initially respond to treatment after a year. In...

Hair growth can begin within three months but sometimes is delayed and some patients do not respond. Regrowth is often patchy at first. Good responders can expect full regrowth, but there are also partial responders and non-responders.