Upon first impression it seems like a made-up illness; something Big Pharma can run ads about at 3am on a Tuesday when nobody but the students and insomniacs are up. It doesn't have the same punch as better known disorders like "Obsessive-Compulsive Disorder" or "Borderline Personality Disorder", or the current darling of mainstream media: "Bipolar Disorder". Try explaining to someone that you have "Seasonal Affective Disorder" and it comes off sounding like your trying to get a snow day when you're in your thirties.
But Seasonal Affective Disorder (or SAD, for short), isn't some new-age lingo for "the winter blues". It wasn't conjured up by pop psychologists to support the use of simulated sunlight indoors. It's not an excuse that people use to get out of work or take more naps during the dark, winter months. SAD is a disease. It's a form of depression and effects a person's brain, body and life equally as much as a major depressive episode. I know, because I have SAD.
The way this sneaky form of depression works is by messing up serotonin receptors in the brain. Serotonin is a neurotransmitter which in normal, healthy people serves to mediate appetite and responses to food. It heightens and lowers mood. It helps to regulate blood sugar and pain. The brain creates its own serotonin in response to a number of stimuli, one of them being our good friend SUNSHINE.
Although the vast majority of people manage to live perfectly normal lives during periods of low light, some, like myself, stop producing adequate amounts of serotonin. Or rather, we produce TOO MUCH. The serotonin is taken back to a neuron to be recycled before it can even be used by the brain. This process is called reuptake, and some reuptake is necessary for the brain to function normally; but when too much of a neurotransmitter is being recycled, it means there's not enough to meet the body's needs.
What happens then?
Depression. Dark, horrible, hopeless depression. I'm not talking about feeling 'sad' a lot or finding yourself crying over petty things like Fancy Feast commercials and burnt toast. I'm talking about not being able to get out of bed. I'm talking about staring at an open refrigerator for ten minutes without being able to decide what to have. I'm talking about staring at a blank Word document, knowing you have to finish this report by the afternoon, and being completely incapable of forming even a single sentence in your mind. I'm talking about a diet of breakfast cereal because your dishes are all in the sink and you just don't have the energy to wash them. I'm talking about showing up to work in the same clothes for three days because you can't do the laundry. You can't read books or enjoy music. You can't find comfort or happiness around friends. And all the while there is an aching, grinding fatigue laying over everything you do, begging you to go to bed, go back to sleep; a fatigue that NEVER leaves, no matter how much time you spend in bed, and no matter how much metric tons of caffeine you dump into your body.
Now that you know the basics about SAD, let's talk about the things no one will tell you: the things you can't find on a Wikipedia page.
1.) It doesn't happen every year.
Just because the word 'seasonal' is in the name, doesn't mean that you can rely on it to occur with any regularity. Some winters you'll managed through with maybe a little weight-gain and a pale complexion. Other winters will slam you into the ground like the mighty hand of a horrible Norse deity and proceed to grind your broken body into the unforgiving ground for THREE GRUELING MONTHS.
And there's no sings indicating which years will be the bad years and which ones will turn out all right. Nothing predicts it. You may be having the time of your life mid-November, and come the end of January have missed nine days of work and can no longer operate a coffee machine. Or, conversely, you may start feeling run down during the Holidays, but find that the new year starts off without a hitch and brings many satisfying months of productivity.
You just never know. You may have it two years in a row and then not again for another five. You may not have any symptoms for two or three years and then get absolutely NAILED with it without any prior warning. This bastard is tricky. Which brings us to #2.
2.) It sneaks up on you.
Depression isn't a one-hit-one-kill kind of illness. You don't go to bed feeling fine and wake up feeling empty, useless and exhausted. Colds and flus come on quickly, and make their presence known as soon as they arrive. Seasonal Affective Disorder creeps in the back door and begins ever so carefully to mess up your brain, spoiling little parts of it at a time, so that you don't know--you NEVER know--exactly when it begins to happen.
I was tired in November, sure. It had been a hard semester. Everyone was tired by then, and we were looking forward to our winter break. But by January I was still tired. Stress, maybe? The switch to the new semester and new classes? Maybe I wasn't getting enough sleep. Maybe I wasn't eating right. When was the last time I actually had enough energy to get through the day? I couldn't even remember.
Forums and websites that I've read say that February is the worst month for people with SAD, and that's probably because by February the depression has been germinating inside of you for three months or more. Little changes in overall mood, a small increase in appetite, a little difficulty getting organized: these changes are imperceptible at first. It's not until they all culminate into their ultimate destructive power that you even notice they're there. Then all of a sudden you ask yourself: "What happened to me? Why can't I concentrate? Why is doing laundry so HARD all of a sudden? Where did these bills come from? Why haven't I paid them? What day of the week is it? Did I miss an appointment yesterday? I've had four cups of coffee today... why am I still so, so tired..?"
It's impossible to pinpoint exactly when the depression starts, and it probably starts at different times for different people. But what is true of almost everyone is that by the time it's gotten bad enough to be noticeable, you're already powerless to stop with it.
3.) It's not just feeling PHYSICALLY tired.
Although fatigue and a desire to sleep are both parts of SAD, and usually parts of other depressive illnesses, it's really the MENTAL fatigue that does the most damage. Many of us have jobs, and most of those jobs don't involve a lot of physical labor; but almost every job is going to require either problem solving or decision making at some point, and depression robs you of the ability to do either.
Let's say you're a cashier, and a lady says her coupon took off for the wrong item. What should you do? Well, you can check her receipt, make a couple of refunds and redo the coupon, or you could call the manager, or you could say "It's the same amount you're saving regardless of which item it's used on" -- but if you have depression, none of that happens. In a depressive haze you can't even think of what to say. You stare at the lady's coupon like it's some magical star-baby that you know nothing of and have never before beheld. You try to make sense of the situation around you and find that nothing is coming together in any logical order. You're tired--you know that. This lady is irritating--you know that to. You don't know what you're supposed to be doing other than sliding things over the scanner and occasionally punching in numbers. Now your manager is coming over and she looks mad. What just happened, anyway?
Here's another scenario. Let's say you made an appointment to meet a client at 11am. At 10am you start trying to get your shit together so you know how to handle the client's problem. What do you need? Where did you put it? Where is the appointment, again? You check your e-mail ten times to make sure. Now you've lost your pen and can't write it down. It's 10:45 and you don't have any materials to give the client. You try to remember how long you had to prepare but everything before yesterday is a blur. You forget your client's name. You pop a caffeine tab to make sure you can get through this meeting. You sit in your chair and gaze listlessly at your client while they tell you about their issue. You only hear about half of it. You have no idea what to say. You keep asking questions to get the client to talk more because you don't know how to help them. At the end the client asks: "So what should I do?" And you have absolutely nothing to say.
During depression your mind spasms closed. You become cognitively paralyzed and prevented from completing even rudimentary tasks. Tight cap on a bottle? You won't open it. Friend invites you to lunch? You won't know what to say. Standing at a vending machine? Good luck choosing something to purchase. Your mind is either a blank fog or a montage of racing, disconnected thoughts. Nothing makes sense or feels solid. Time loses all meaning. Days can drag by like years or they can feel as fleeting as minutes. Every once in a while you'll have one incandescent moment of clarity when you think to yourself: "This isn't me. I'm capable and competent and I've been doing this job for years--why can't I do it now? Why can't I do ANYTHING?"
4.) Everything suffers
It's not just your state of mind that goes to Hell during a depressive episode, it's everything. Your job, your finances, your credit score, your house, your family and friends, any hobbies you had, your diet--everything. When you can't think logically or functionally, and when getting out of bed in the morning feels like running a pentathalon in plate mail, it's all you can do just to make it through the day. You may show up to work, but your work will suffer. You'll get in trouble for forgetting things or for taking too long or making basic, entry-level mistakes like sending a document to the wrong person, or leaving the copy room unlocked. You may go out with friends, but you can't keep up with their conversations; you're withdrawn and moody. You spend every minute out of the house yearning to go back to bed, and it shows. By the time you get home you're too exhausted to care about anything. Mold and mildew are growing in your bathroom. The living room is coated with dust and cracker-crumbs. Your laundry is piled ankle-deep on the floor, along with garbage, luggage and important materials you need for work. The sink is filled with dishes and the trash is gathering flies. You take a look at your messy reflection in the mirror before collapsing into bed. Even though you sleep for nine hours, waking up to that alarm clock feels like waking up in Hell.
This past February I lived on a diet of breakfast cereal and toast. I didn't do laundry for two months. I would go days without showering. If I balled up a napkin or a wrapper and tossed it down, it would just stay there. I gained eight pounds. My car insurance almost got cancelled because I hadn't paid. I was late on the rent. I started getting coughing fits and sore throats from indoor allergens. I kept cancelling plans with friends so I had more time to sleep. After I ran out of cereal bowls, I just started eating with my hands. Crumbs got everywhere. I couldn't find any clean clothes to wear. I'm sure I must have smelled bad. I had headaches and stomach aches every day. Any real food left in the fridge decayed. When I came back after a week of Spring Break, I looked around my apartment and was appalled that anyone had actually lived there. It was squalor. It was unhealthy. But during the month of February, I couldn't care less. It was all I could do just to survive from one day to another.
5.) You're never going to remember it.
One of the problems with cognitive paralysis is that you can't form new memories very well. By the second week of February, I couldn't remember January at all, and by March I was down to a memory of maybe two days. My whole future was one week and my past was yesterday. Even now, although I know I must have done work and visited friends and eaten cereal last month, I can't really REMEMBER doing it. I just have knowledge of having done it. I don't remember anything from my classes, either. Everything is just a hazy blur, like the memory of a dream. My mother told me that I have SAD every year, but I can't recall ever letting the house go to Hell as much as it did. I don't remember being unable to make decisions or being late on so many payments or isolating myself from my friends.
And you won't either. By the time the pall of depression starts rolling back and you can start completing the everyday tasks that had formally been impossible, the memory of the SAD will have withered into all but a shadow in the back of your mind. In June you'll remark to a friend "This year's going by awfully quickly" -- and indeed it will, because you missed the first quarter of it. Sometime in the future you'll look back on the winter of your SAD and remember a few randoms things: something a friend said, or anything newsworthy that happened during that time. You won't remember the depression.
Not until the NEXT time it gets you, anyway.