Symptoms vary, as does medication
. There are 3 main different kinds of ADHD - a "I can't concentrate" - easily distracted kind, a "I can't sit still" - always moving kind, and a both symptoms at once - mixed ADHD type. Symptoms are often expressed differently in males and females as well - because what's socially acceptable for men isn't for women and vice-versa.
One main characteristic that I've seen with most adults that I know with ADHD is that they put things off - procrastinate. They don't mean to, they just get easily overhwelmed. They also have a difficult time following a plan and tend to do things at the last moment. Prioritising activities - what they should be doing vs. what they are doing can be difficult and time may fly by without them realizing how much time has actually passed. Therefore they may be late a lot, and be rather disorganized and forget or lose things. They often can have trouble with paying bills and such. They often have a good deal of energy (some types anyway) as well. (I never stop fidgeting and am very easily distracted)
Some have a flexible approach to medication, but all medication-related adjustments should be done under the supervision of, or with the agreement of a physician.
Some people choose to take ADHD medication (Ritalin, for ex.) only on weekdays (for work/school) or as needed, others take it every day.
Some have experienced that their medicine wears off within 5 to 8 hours, so they may take another pill at that point, or may take a smaller pill in between to adjust their medicine level in their system.
For example, I take "extended release" Ritalin capsules. This means that I take it at 9:00 a.m. and then perhaps again at 1 or 2:00. Though sometimes if I get up later, I may take both doses a bit later than usual, with the knowledge that I shouldn't take it later than 4 or 5:00 if I plan on sleeping at a reasonable hour.
But there are other options. I could take smaller dose capsules (I have those too) 3 times per day - so the daily dose is the same - but I'm not good at remembering, which is why I have the 2x per day agreement with my doc.
Other people take tablets that release the medicine immediately (usually smaller tablets) but the effects of those tablets don't last as long. They might take one type in the morning and another in the afternoon to target when they really need help with concentration/attention.
However, the whole point here is that ADHD meds (all meds, really) always need to be taken in correspondence with a treatment plan/agreement with a doctor on how the meds will be taken.
Ritalin, Concerta and most other ADHD medicines are stimulants. Too much can be dangerous
- think about how your heart beats if you have too much coffee.
It is therefore very important that the patient has his blood pressure and medicine levels (blood tests) checked regularly by a doctor
, to make sure that side effects aren't causing problems.
I hope that helps!