Seems I'm allergic to the plant. For about 3 months I've had a rash on one finger. Originally I thought I dribbled some ph-up on that finger. But, it kept getting aggravated and enlarging. I thought it was nutes. Wore gloves but same problem. About 3 weeks ago I dug some partially smoked material out of a bowl before I went to bed. Woke up early morning with my finger on fire.
It's weird because it's just this patch of skin on one finger that is affected, not the finger of the other hand that I dug the bud out with.
Stopped smoking and began wearing gloves when feeding the three plants I was growing. It got much better, but I noticed it would flare up a little if the leaves brushed my arm. I avoided doing that and it got really much better after a week. Then mailed seeds to someone. Because my finger was almost perfect, I didn't even think to put gloves on. (Just seeds!). A few hours later my finger blistered.
I cut my three plants down in mid flower. I want to get the patch of skin rash-free for a couple months to verify it's cannabis. Then handle some cured bud with caution (such as wearing gloves) and see if it comes back.
I found taking antihistamines help. (Claritin once a day. Before bed I take a couple diphenhydramine or a clorpheniramine.). Soaking my finger in a cup with Aveno oatmeal helps. Gold Bond (Ultimate, healing aloe) cream seems to be the best of the creams I've tried.[1] Been told to get Kenalog (Triamcinolone) cream.
I believe I did something to aggravate that patch of skin, making it an outlet for what would otherwise be a minor allergic response that I wasn't noticing. I either did dribble some ph-up on that skin, or it's from spraying weed killer in a tank sprayer whose handle leaks and I wasn't wearing gloves. I remember I did that when this started, and again when it got worse.
Googling indicates it's not an uncommon condition. Reports of people handling weed for years and suddenly having skin problems.
[1] Petroleum jelly made it worse. Cortizone-10 seemed to aggravate it more than help. Aveno Daily Moisturizing is a little better than the previous two. But, Gold Bond Ultimate healing aloe seemed to be the less stinging, more calming.).