Bacterial infections have been known to cause horizontal ridges in nails. Yeast or other fungal infections can lead to nail issues and one of those symptoms can be horizontal ridges. Other infections like heart valve infections and viral warts can also change the way your nail looks, including horizontal ridges.
The clinical syndrome has been characterized by restlessness, anorexia, irritability and insomnia that begin less than 24 hours after discontinuation of marijuana, peak in intensity on days 2 to 4, and last for seven to 10 days (Budney et al., 1999; Haney et al., 1999; Mendelson et al., 1984).
Physical withdrawal can be as mild as simply getting a hangover or even the shakes when one has abstained from drinking alcohol for a short period-of-time. Other milder physical alcohol withdrawal symptoms can include the sweats, nausea, headache, anxiety, a rapid heart beat, and increased blood pressure. Although these symptoms are uncomfortable and enough to send a chemically dependent person back into a binge, they are not, of themselves life threatening.